Merge pull request #1164 from quantified-uncertainty/no-fr-values

No frValues

packages/squiggle-lang/__tests__/SquiggleLibrary/SquiggleLibrary_FunctionRegistryLibrary_test.res

@@ -80,6 +80,13 @@ describe("FunctionRegistry Library", () => {
       "SampleSet.toList(SampleSet.mapN([SampleSet.fromList([1,2,3,4,5,6]), SampleSet.fromList([6, 5, 4, 3, 2, 1])], {|x| x[0] > x[1] ? x[0] : x[1]}))",
       "Ok([6,5,4,4,5,6])",
     )
+
+    testEvalToBe("Dict.merge({a: 1, b: 2}, {b: 3, c: 4, d: 5})", "Ok({a: 1,b: 3,c: 4,d: 5})")
+    testEvalToBe("Dict.mergeMany([{a: 1, b: 2}, {c: 3, d: 4}, {c: 5, e: 6}])", "Ok({a: 1,b: 2,c: 5,d: 4,e: 6})")
+    testEvalToBe("Dict.keys({a: 1, b: 2})", "Ok(['a','b'])")
+    testEvalToBe("Dict.values({a: 1, b: 2})", "Ok([1,2])")
+    testEvalToBe("Dict.toList({a: 1, b: 2})", "Ok([['a',1],['b',2]])")
+    testEvalToBe("Dict.fromList([['a', 1], ['b', 2]])", "Ok({a: 1,b: 2})")
   })
 
   describe("Fn auto-testing", () => {

packages/squiggle-lang/src/rescript/FR/FR_Builtin.res

@@ -14,7 +14,7 @@ let makeFnMany = (name: string, definitions: array<simpleDefinition>) =>
     ~nameSpace,
     ~requiresNamespace=false,
     ~definitions=definitions->Js.Array2.map(({inputs, fn}) =>
-      FnDefinition.make(~name, ~inputs, ~run=(inputs, _, _, _) => fn(inputs), ())
+      FnDefinition.make(~name, ~inputs, ~run=(inputs, _, _) => fn(inputs), ())
     ),
     (),
   )

packages/squiggle-lang/src/rescript/FR/FR_Danger.res

@@ -165,7 +165,7 @@ module Integration = {
         FnDefinition.make(
           ~name="integrateFunctionBetweenWithNumIntegrationPoints",
           ~inputs=[FRTypeLambda, FRTypeNumber, FRTypeNumber, FRTypeNumber],
-          ~run=(inputs, _, env, reducer) => {
+          ~run=(inputs, env, reducer) => {
             let result = switch inputs {
             | [_, _, _, IEvNumber(0.0)] =>
               "Integration error 4 in Danger.integrate: Increment can't be 0."
@@ -209,7 +209,7 @@ module Integration = {
         FnDefinition.make(
           ~name="integrateFunctionBetweenWithEpsilon",
           ~inputs=[FRTypeLambda, FRTypeNumber, FRTypeNumber, FRTypeNumber],
-          ~run=(inputs, _, env, reducer) => {
+          ~run=(inputs, env, reducer) => {
             let result = switch inputs {
             | [_, _, _, IEvNumber(0.0)] =>
               "Integration error in Danger.integrate: Increment can't be 0."
@@ -403,7 +403,7 @@ module DiminishingReturns = {
         FnDefinition.make(
           ~name="optimalAllocationGivenDiminishingMarginalReturnsForManyFunctions",
           ~inputs=[FRTypeArray(FRTypeLambda), FRTypeNumber, FRTypeNumber],
-          ~run=(inputs, _, environment, reducer) =>
+          ~run=(inputs, environment, reducer) =>
             switch inputs {
             | [IEvArray(innerlambdas), IEvNumber(funds), IEvNumber(approximateIncrement)] => {
                 let individuallyWrappedLambdas = E.A.fmap(innerLambda => {

packages/squiggle-lang/src/rescript/FR/FR_Date.res

@@ -10,7 +10,7 @@ let makeFn = (
     ~name,
     ~nameSpace="",
     ~requiresNamespace=false,
-    ~definitions=[FnDefinition.make(~name, ~inputs, ~run=(inputs, _, _, _) => fn(inputs), ())],
+    ~definitions=[FnDefinition.make(~name, ~inputs, ~run=(inputs, _, _) => fn(inputs), ())],
     (),
   )
 
@@ -23,7 +23,7 @@ let makeNumberToDurationFn = (name: string, fn: float => DateTime.Duration.t) =>
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeNumber],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvNumber(t)] => IEvTimeDuration(fn(t))->Ok
           | _ => Error(impossibleError)
@@ -43,7 +43,7 @@ let makeDurationToNumberFn = (name: string, fn: DateTime.Duration.t => float) =>
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeTimeDuration],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvTimeDuration(t)] => IEvNumber(fn(t))->Ok
           | _ => Error(impossibleError)

packages/squiggle-lang/src/rescript/FR/FR_Dict.res

@@ -29,10 +29,6 @@ module Internals = {
     ->E.R2.fmap(Belt.Map.String.fromArray)
     ->E.R2.fmap(Wrappers.evRecord)
 
-  let merge = (a: t, b: t): Reducer_T.value => IEvRecord(
-    Belt.Map.String.merge(a, b, (_, _, c) => c),
-  )
-
   //Belt.Map.String has a function for mergeMany, but I couldn't understand how to use it yet.
   let mergeMany = (a: array<t>): Reducer_T.value => {
     let mergedValues =
@@ -52,10 +48,10 @@ let library = [
       FnDefinition.make(
         ~name="merge",
         ~inputs=[FRTypeDict(FRTypeAny), FRTypeDict(FRTypeAny)],
-        ~run=(inputs, _, _, _) => {
+        ~run=(inputs, _, _) => {
           switch inputs {
-          | [IEvRecord(d1), IEvRecord(d2)] => Internals.merge(d1, d2)->Ok
+          | [IEvRecord(d1), IEvRecord(d2)] => Internals.mergeMany([d1, d2])->Ok
-          | _ => Error(impossibleError)
+          | _ => impossibleError->Error
           }
         },
         (),
@@ -63,7 +59,7 @@ let library = [
     ],
     (),
   ),
-  //TODO: Change to use new mergeMany() function.
+
   Function.make(
     ~name="mergeMany",
     ~nameSpace,
@@ -74,14 +70,17 @@ let library = [
       FnDefinition.make(
         ~name="mergeMany",
         ~inputs=[FRTypeArray(FRTypeDict(FRTypeAny))],
-        ~run=(_, inputs, _, _) =>
+        ~run=(inputs, _, _) => {
-          inputs
+          switch inputs {
-          ->Prepare.ToTypedArray.dicts
+            | [IEvArray(dicts)] => {
-          ->E.R2.fmap(E.Dict.concatMany)
+              dicts->Belt.Array.map(dictValue => switch dictValue {
-          ->E.R2.fmap(Js.Dict.map((. r) => FunctionRegistry_Core.FRType.matchReverse(r)))
+                | IEvRecord(dict) => dict
-          ->E.R2.fmap(r => r->Js.Dict.entries->Belt.Map.String.fromArray)
+                | _ => impossibleError->Reducer_ErrorValue.toException
-          ->E.R2.fmap(Wrappers.evRecord)
+              })->Internals.mergeMany->Ok
-          ->E.R2.errMap(e => e->Reducer_ErrorValue.REOther),
+            }
+            | _ => impossibleError->Error
+          }
+        },
         (),
       ),
     ],
@@ -97,7 +96,7 @@ let library = [
       FnDefinition.make(
         ~name="keys",
         ~inputs=[FRTypeDict(FRTypeAny)],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvRecord(d1)] => Internals.keys(d1)->Ok
           | _ => Error(impossibleError)
@@ -117,7 +116,7 @@ let library = [
       FnDefinition.make(
         ~name="values",
         ~inputs=[FRTypeDict(FRTypeAny)],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvRecord(d1)] => Internals.values(d1)->Ok
           | _ => Error(impossibleError)
@@ -137,7 +136,7 @@ let library = [
       FnDefinition.make(
         ~name="toList",
         ~inputs=[FRTypeDict(FRTypeAny)],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvRecord(dict)] => dict->Internals.toList->Ok
           | _ => Error(impossibleError)
@@ -157,7 +156,7 @@ let library = [
       FnDefinition.make(
         ~name="fromList",
         ~inputs=[FRTypeArray(FRTypeArray(FRTypeAny))],
-        ~run=(inputs, _, _, _) => {
+        ~run=(inputs, _, _) => {
           switch inputs {
           | [IEvArray(items)] => Internals.fromList(items)
           | _ => Error(impossibleError)

packages/squiggle-lang/src/rescript/FR/FR_Dist.res

@@ -22,7 +22,7 @@ module DistributionCreation = {
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeDistOrNumber, FRTypeDistOrNumber],
-        ~run=(_, inputs, env, _) =>
+        ~run=(inputs, env, _) =>
           inputs->Prepare.ToValueTuple.twoDistOrNumber->process(~fn, ~env),
         (),
       )
@@ -32,8 +32,8 @@ module DistributionCreation = {
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeRecord([("p5", FRTypeDistOrNumber), ("p95", FRTypeDistOrNumber)])],
-        ~run=(_, inputs, env, _) =>
+        ~run=(inputs, env, _) =>
-          inputs->Prepare.ToValueTuple.Record.twoDistOrNumber->process(~fn, ~env),
+          inputs->Prepare.ToValueTuple.Record.twoDistOrNumber(("p5", "p95"))->process(~fn, ~env),
         (),
       )
     }
@@ -42,8 +42,8 @@ module DistributionCreation = {
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeRecord([("mean", FRTypeDistOrNumber), ("stdev", FRTypeDistOrNumber)])],
-        ~run=(_, inputs, env, _) =>
+        ~run=(inputs, env, _) =>
-          inputs->Prepare.ToValueTuple.Record.twoDistOrNumber->process(~fn, ~env),
+          inputs->Prepare.ToValueTuple.Record.twoDistOrNumber(("mean", "stdev"))->process(~fn, ~env),
         (),
       )
     }
@@ -60,7 +60,7 @@ module DistributionCreation = {
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeDistOrNumber],
-        ~run=(_, inputs, env, _) =>
+        ~run=(inputs, env, _) =>
           inputs->Prepare.ToValueTuple.oneDistOrNumber->process(~fn, ~env),
         (),
       )

packages/squiggle-lang/src/rescript/FR/FR_Fn.res

@@ -7,12 +7,12 @@ module Declaration = {
     ("inputs", FRTypeArray(FRTypeRecord([("min", FRTypeNumber), ("max", FRTypeNumber)]))),
   ])
 
-  let fromExpressionValue = (e: frValue): result<Reducer_T.value, string> => {
+  let fromExpressionValue = (e: Reducer_T.value): result<Reducer_T.value, string> => {
-    switch FunctionRegistry_Helpers.Prepare.ToValueArray.Record.twoArgs([e]) {
+    switch FunctionRegistry_Helpers.Prepare.ToValueArray.Record.twoArgs([e], ("fn", "inputs")) {
-    | Ok([FRValueLambda(lambda), FRValueArray(inputs)]) => {
+    | Ok([IEvLambda(lambda), IEvArray(inputs)]) => {
         open FunctionRegistry_Helpers.Prepare
         let getMinMax = arg =>
-          ToValueArray.Record.toArgs([arg])
+          ToValueArray.Record.twoArgs([arg], ("min", "max"))
           ->E.R.bind(ToValueTuple.twoNumbers)
           ->E.R2.fmap(((min, max)) => Declaration.ContinuousFloatArg.make(min, max))
         inputs
@@ -49,7 +49,7 @@ let library = [
       FnDefinition.make(
         ~name="declare",
         ~inputs=[Declaration.frType],
-        ~run=(_, inputs, _, _) => {
+        ~run=(inputs, _, _) => {
           inputs->getOrError(0)->E.R.bind(Declaration.fromExpressionValue)->E.R2.errMap(wrapError)
         },
         (),

packages/squiggle-lang/src/rescript/FR/FR_GenericDist.res

@@ -326,7 +326,7 @@ let makeProxyFn = (name: string, inputs: array<frType>) => {
       FnDefinition.make(
         ~name,
         ~inputs,
-        ~run=(inputs, _, env, _) => Old.dispatch((name, inputs), env),
+        ~run=(inputs, env, _) => Old.dispatch((name, inputs), env),
         (),
       ),
     ],

packages/squiggle-lang/src/rescript/FR/FR_List.res

@@ -86,7 +86,7 @@ let library = [
       FnDefinition.make(
         ~name="make",
         ~inputs=[FRTypeNumber, FRTypeAny],
-        ~run=(inputs, _, _, _) => {
+        ~run=(inputs, _, _) => {
           switch inputs {
           | [IEvNumber(number), value] => Internals.makeFromNumber(number, value)->Ok
           | _ => Error(impossibleError)
@@ -107,11 +107,11 @@ let library = [
       FnDefinition.make(
         ~name="upTo",
         ~inputs=[FRTypeNumber, FRTypeNumber],
-        ~run=(_, inputs, _, _) =>
+        ~run=(inputs, _, _) =>
-          inputs
+          switch inputs {
-          ->Prepare.ToValueTuple.twoNumbers
+            | [IEvNumber(low), IEvNumber(high)] => Internals.upTo(low, high)->Ok
-          ->E.R2.fmap(((low, high)) => Internals.upTo(low, high))
+            | _ => impossibleError->Error
-          ->E.R2.errMap(wrapError),
+          },
         (),
       ),
     ],
@@ -126,7 +126,7 @@ let library = [
       FnDefinition.make(
         ~name="first",
         ~inputs=[FRTypeArray(FRTypeAny)],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvArray(array)] => Internals.first(array)->E.R2.errMap(wrapError)
           | _ => Error(impossibleError)
@@ -145,7 +145,7 @@ let library = [
       FnDefinition.make(
         ~name="last",
         ~inputs=[FRTypeArray(FRTypeAny)],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvArray(array)] => Internals.last(array)->E.R2.errMap(wrapError)
           | _ => Error(impossibleError)
@@ -165,7 +165,7 @@ let library = [
       FnDefinition.make(
         ~name="reverse",
         ~inputs=[FRTypeArray(FRTypeAny)],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvArray(array)] => Internals.reverse(array)->Ok
           | _ => Error(impossibleError)
@@ -185,7 +185,7 @@ let library = [
       FnDefinition.make(
         ~name="map",
         ~inputs=[FRTypeArray(FRTypeAny), FRTypeLambda],
-        ~run=(inputs, _, env, reducer) =>
+        ~run=(inputs, env, reducer) =>
           switch inputs {
           | [IEvArray(array), IEvLambda(lambda)] => Ok(Internals.map(array, lambda, env, reducer))
           | _ => Error(impossibleError)
@@ -204,7 +204,7 @@ let library = [
       FnDefinition.make(
         ~name="reduce",
         ~inputs=[FRTypeArray(FRTypeAny), FRTypeAny, FRTypeLambda],
-        ~run=(inputs, _, env, reducer) =>
+        ~run=(inputs, env, reducer) =>
           switch inputs {
           | [IEvArray(array), initialValue, IEvLambda(lambda)] =>
             Ok(Internals.reduce(array, initialValue, lambda, env, reducer))
@@ -224,7 +224,7 @@ let library = [
       FnDefinition.make(
         ~name="reduceReverse",
         ~inputs=[FRTypeArray(FRTypeAny), FRTypeAny, FRTypeLambda],
-        ~run=(inputs, _, env, reducer) =>
+        ~run=(inputs, env, reducer) =>
           switch inputs {
           | [IEvArray(array), initialValue, IEvLambda(lambda)] =>
             Ok(Internals.reduceReverse(array, initialValue, lambda, env, reducer))
@@ -244,7 +244,7 @@ let library = [
       FnDefinition.make(
         ~name="filter",
         ~inputs=[FRTypeArray(FRTypeAny), FRTypeLambda],
-        ~run=(inputs, _, env, reducer) =>
+        ~run=(inputs, env, reducer) =>
           switch inputs {
           | [IEvArray(array), IEvLambda(lambda)] =>
             Ok(Internals.filter(array, lambda, env, reducer))

packages/squiggle-lang/src/rescript/FR/FR_Number.res

@@ -9,8 +9,9 @@ module ArrayNumberDist = {
     FnDefinition.make(
       ~name,
       ~inputs=[FRTypeArray(FRTypeNumber)],
-      ~run=(_, inputs, _, _) =>
+      ~run=(inputs, _, _) =>
-        Prepare.ToTypedArray.numbers(inputs)
+        inputs
+        ->Prepare.ToTypedArray.numbers
         ->E.R.bind(r => E.A.length(r) === 0 ? Error("List is empty") : Ok(r))
         ->E.R.bind(fn)
         ->E.R2.errMap(wrapError),

packages/squiggle-lang/src/rescript/FR/FR_Pointset.res

@@ -4,21 +4,28 @@ open FunctionRegistry_Helpers
 let nameSpace = "PointSet"
 let requiresNamespace = true
 
-let inputsTodist = (inputs: array<FunctionRegistry_Core.frValue>, makeDist) => {
+let inputsToDist = (inputs: array<Reducer_T.value>, xyShapeToPointSetDist) => {
-  let array = inputs->getOrError(0)->E.R.bind(Prepare.ToValueArray.Array.openA)
+  // TODO - rewrite in more functional/functor-based style
-  let xyCoords =
+  switch inputs {
-    array->E.R.bind(xyCoords =>
+    | [IEvArray(items)] => {
-      xyCoords
+      items->Belt.Array.map(
-      ->E.A2.fmap(xyCoord =>
+        item =>
-        [xyCoord]->Prepare.ToValueArray.Record.twoArgs->E.R.bind(Prepare.ToValueTuple.twoNumbers)
+        switch item {
-      )
+          | IEvRecord(map) => {
-      ->E.A.R.firstErrorOrOpen
+            let xValue = map->Belt.Map.String.get("x")
-    )
+            let yValue = map->Belt.Map.String.get("y")
-  let expressionValue =
+            switch (xValue, yValue) {
-    xyCoords
+            | (Some(IEvNumber(x)), Some(IEvNumber(y))) => (x, y)
-    ->E.R.bind(r => r->XYShape.T.makeFromZipped->E.R2.errMap(XYShape.Error.toString))
+            | _ => impossibleError->Reducer_ErrorValue.toException
-    ->E.R2.fmap(r => Reducer_T.IEvDistribution(PointSet(makeDist(r))))
+            }
-  expressionValue
+          }
+          | _ => impossibleError->Reducer_ErrorValue.toException
+        }
+      )->Ok->E.R.bind(r => r->XYShape.T.makeFromZipped->E.R2.errMap(XYShape.Error.toString))
+       ->E.R2.fmap(r => Reducer_T.IEvDistribution(PointSet(r->xyShapeToPointSetDist)))
+    }
+    | _ => impossibleError->Reducer_ErrorValue.toException
+  }
 }
 
 module Internal = {
@@ -53,9 +60,9 @@ let library = [
       FnDefinition.make(
         ~name="fromDist",
         ~inputs=[FRTypeDist],
-        ~run=(_, inputs, env, _) =>
+        ~run=(inputs, env, _) =>
           switch inputs {
-          | [FRValueDist(dist)] =>
+          | [IEvDistribution(dist)] =>
             GenericDist.toPointSet(
               dist,
               ~xyPointLength=env.xyPointLength,
@@ -82,7 +89,7 @@ let library = [
       FnDefinition.make(
         ~name="mapY",
         ~inputs=[FRTypeDist, FRTypeLambda],
-        ~run=(inputs, _, env, reducer) =>
+        ~run=(inputs, env, reducer) =>
           switch inputs {
           | [IEvDistribution(PointSet(dist)), IEvLambda(lambda)] =>
             Internal.mapY(dist, lambda, env, reducer)
@@ -110,8 +117,8 @@ let library = [
       FnDefinition.make(
         ~name="makeContinuous",
         ~inputs=[FRTypeArray(FRTypeRecord([("x", FRTypeNumeric), ("y", FRTypeNumeric)]))],
-        ~run=(_, inputs, _, _) =>
+        ~run=(inputs, _, _) =>
-          inputsTodist(inputs, r => Continuous(Continuous.make(r)))->E.R2.errMap(wrapError),
+          inputsToDist(inputs, r => Continuous(Continuous.make(r)))->E.R2.errMap(wrapError),
         (),
       ),
     ],
@@ -134,8 +141,8 @@ let library = [
       FnDefinition.make(
         ~name="makeDiscrete",
         ~inputs=[FRTypeArray(FRTypeRecord([("x", FRTypeNumeric), ("y", FRTypeNumeric)]))],
-        ~run=(_, inputs, _, _) =>
+        ~run=(inputs, _, _) =>
-          inputsTodist(inputs, r => Discrete(Discrete.make(r)))->E.R2.errMap(wrapError),
+          inputsToDist(inputs, r => Discrete(Discrete.make(r)))->E.R2.errMap(wrapError),
         (),
       ),
     ],

packages/squiggle-lang/src/rescript/FR/FR_Sampleset.res

@@ -89,9 +89,9 @@ let libaryBase = [
       FnDefinition.make(
         ~name="fromDist",
         ~inputs=[FRTypeDist],
-        ~run=(_, inputs, environment, _) =>
+        ~run=(inputs, environment, _) =>
           switch inputs {
-          | [FRValueDist(dist)] =>
+          | [IEvDistribution(dist)] =>
             GenericDist.toSampleSetDist(dist, environment.sampleCount)
             ->E.R2.fmap(Wrappers.sampleSet)
             ->E.R2.fmap(Wrappers.evDistribution)
@@ -113,9 +113,9 @@ let libaryBase = [
       FnDefinition.make(
         ~name="fromList",
         ~inputs=[FRTypeArray(FRTypeNumber)],
-        ~run=(_, inputs, _, _) => {
+        ~run=(inputs, _, _) => {
           let sampleSet =
-            Prepare.ToTypedArray.numbers(inputs) |> E.R2.bind(r =>
+            inputs->Prepare.ToTypedArray.numbers |> E.R2.bind(r =>
               SampleSetDist.make(r)->E.R2.errMap(_ => "AM I HERE? WHYERE AMI??")
             )
           sampleSet
@@ -138,7 +138,7 @@ let libaryBase = [
       FnDefinition.make(
         ~name="toList",
         ~inputs=[FRTypeDist],
-        ~run=(inputs, _, _, _) =>
+        ~run=(inputs, _, _) =>
           switch inputs {
           | [IEvDistribution(SampleSet(dist))] =>
             dist->E.A2.fmap(Wrappers.evNumber)->Wrappers.evArray->Ok
@@ -159,7 +159,7 @@ let libaryBase = [
       FnDefinition.make(
         ~name="fromFn",
         ~inputs=[FRTypeLambda],
-        ~run=(inputs, _, environment, reducer) =>
+        ~run=(inputs, environment, reducer) =>
           switch inputs {
           | [IEvLambda(lambda)] =>
             switch Internal.fromFn(lambda, environment, reducer) {
@@ -183,7 +183,7 @@ let libaryBase = [
       FnDefinition.make(
         ~name="map",
         ~inputs=[FRTypeDist, FRTypeLambda],
-        ~run=(inputs, _, environment, reducer) =>
+        ~run=(inputs, environment, reducer) =>
           switch inputs {
           | [IEvDistribution(SampleSet(dist)), IEvLambda(lambda)] =>
             Internal.map1(dist, lambda, environment, reducer)
@@ -206,7 +206,7 @@ let libaryBase = [
       FnDefinition.make(
         ~name="map2",
         ~inputs=[FRTypeDist, FRTypeDist, FRTypeLambda],
-        ~run=(inputs, _, environment, reducer) => {
+        ~run=(inputs, environment, reducer) => {
           switch inputs {
           | [
               IEvDistribution(SampleSet(dist1)),
@@ -234,7 +234,7 @@ let libaryBase = [
       FnDefinition.make(
         ~name="map3",
         ~inputs=[FRTypeDist, FRTypeDist, FRTypeDist, FRTypeLambda],
-        ~run=(inputs, _, environment, reducer) =>
+        ~run=(inputs, environment, reducer) =>
           switch inputs {
           | [
               IEvDistribution(SampleSet(dist1)),
@@ -262,7 +262,7 @@ let libaryBase = [
       FnDefinition.make(
         ~name="mapN",
         ~inputs=[FRTypeArray(FRTypeDist), FRTypeLambda],
-        ~run=(inputs, _, environment, reducer) =>
+        ~run=(inputs, environment, reducer) =>
           switch inputs {
           | [IEvArray(dists), IEvLambda(lambda)] =>
             Internal.mapN(dists, lambda, environment, reducer)
@@ -280,7 +280,7 @@ module Comparison = {
     FnDefinition.make(
       ~name,
       ~inputs,
-      ~run=(inputs, _, _, _) => {
+      ~run=(inputs, _, _) => {
         run(inputs)
       },
       (),

packages/squiggle-lang/src/rescript/FR/FR_Scoring.res

@@ -30,14 +30,14 @@ let library = [
             ("prior", FRTypeDist),
           ]),
         ],
-        ~run=(_, inputs, environment, _) => {
+        ~run=(inputs, environment, _) => {
-          switch FunctionRegistry_Helpers.Prepare.ToValueArray.Record.threeArgs(inputs) {
+          switch FunctionRegistry_Helpers.Prepare.ToValueArray.Record.threeArgs(inputs, ("estimate", "answer", "prior")) {
-          | Ok([FRValueDist(estimate), FRValueDistOrNumber(FRValueDist(d)), FRValueDist(prior)]) =>
+          | Ok([IEvDistribution(estimate), IEvDistribution(d), IEvDistribution(prior)]) =>
             runScoring(estimate, Score_Dist(d), Some(prior), environment)
           | Ok([
-              FRValueDist(estimate),
+              IEvDistribution(estimate),
-              FRValueDistOrNumber(FRValueNumber(d)),
+              IEvNumber(d),
-              FRValueDist(prior),
+              IEvDistribution(prior),
             ]) =>
             runScoring(estimate, Score_Scalar(d), Some(prior), environment)
           | Error(e) => Error(e->FunctionRegistry_Helpers.wrapError)
@@ -49,11 +49,11 @@ let library = [
       FnDefinition.make(
         ~name="logScore",
         ~inputs=[FRTypeRecord([("estimate", FRTypeDist), ("answer", FRTypeDistOrNumber)])],
-        ~run=(_, inputs, environment, _) => {
+        ~run=(inputs, environment, _) => {
-          switch FunctionRegistry_Helpers.Prepare.ToValueArray.Record.twoArgs(inputs) {
+          switch FunctionRegistry_Helpers.Prepare.ToValueArray.Record.twoArgs(inputs, ("estimate", "answer")) {
-          | Ok([FRValueDist(estimate), FRValueDistOrNumber(FRValueDist(d))]) =>
+          | Ok([IEvDistribution(estimate), IEvDistribution(d)]) =>
             runScoring(estimate, Score_Dist(d), None, environment)
-          | Ok([FRValueDist(estimate), FRValueDistOrNumber(FRValueNumber(d))]) =>
+          | Ok([IEvDistribution(estimate), IEvNumber(d)]) =>
             runScoring(estimate, Score_Scalar(d), None, environment)
           | Error(e) => Error(e->FunctionRegistry_Helpers.wrapError)
           | _ => Error(FunctionRegistry_Helpers.impossibleError)
@@ -74,9 +74,9 @@ let library = [
       FnDefinition.make(
         ~name="klDivergence",
         ~inputs=[FRTypeDist, FRTypeDist],
-        ~run=(_, inputs, environment, _) => {
+        ~run=(inputs, environment, _) => {
           switch inputs {
-          | [FRValueDist(estimate), FRValueDist(d)] =>
+          | [IEvDistribution(estimate), IEvDistribution(d)] =>
             runScoring(estimate, Score_Dist(d), None, environment)
           | _ => Error(FunctionRegistry_Helpers.impossibleError)
           }

packages/squiggle-lang/src/rescript/FR/FR_Units.res

@@ -9,7 +9,7 @@ let makeUnitFn = (name: string, multiplier: float) => {
       FnDefinition.make(
         ~name="fromUnit_" ++ name,
         ~inputs=[FRTypeNumber],
-        ~run=(inputs, _, _, _) => {
+        ~run=(inputs, _, _) => {
           switch inputs {
           | [IEvNumber(f)] => IEvNumber(f *. multiplier)->Ok
           | _ => FunctionRegistry_Helpers.impossibleError->Error

packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Core.res

@@ -23,35 +23,13 @@ type rec frType =
 and frTypeRecord = array<frTypeRecordParam>
 and frTypeRecordParam = (string, frType)
 
-/*
+type frValueDistOrNumber = FRValueNumber(float) | FRValueDist(DistributionTypes.genericDist)
-  Function Registry "Value". A type, with the information of that type.
-  Like, #Float(40.0)
-*/
-type rec frValue =
-  | FRValueNumber(float)
-  | FRValueBool(bool)
-  | FRValueDate(Js.Date.t)
-  | FRValueTimeDuration(float)
-  | FRValueDist(DistributionTypes.genericDist)
-  | FRValueArray(array<frValue>)
-  | FRValueDistOrNumber(frValueDistOrNumber)
-  | FRValueRecord(frValueRecord)
-  | FRValueLambda(Reducer_T.lambdaValue)
-  | FRValueString(string)
-  | FRValueVariant(string)
-  | FRValueAny(frValue)
-  | FRValueDict(Js.Dict.t<frValue>)
-and frValueRecord = array<frValueRecordParam>
-and frValueRecordParam = (string, frValue)
-and frValueDictParam = (string, frValue)
-and frValueDistOrNumber = FRValueNumber(float) | FRValueDist(DistributionTypes.genericDist)
 
 type fnDefinition = {
   name: string,
   inputs: array<frType>,
   run: (
     array<Reducer_T.value>,
-    array<frValue>,
     Reducer_T.environment,
     Reducer_T.reducerFn,
   ) => result<Reducer_T.value, errorValue>,
@@ -91,104 +69,43 @@ module FRType = {
     | FRTypeAny => `any`
     }
 
-  let rec toFrValue = (r: Reducer_T.value): option<frValue> =>
+  let rec matchWithValue = (t: t, r: Reducer_T.value): bool =>
-    // not all value variants are supported, but it's not important (we'll probably deprecate frValues soon anyway)
-    switch r {
-    | IEvNumber(f) => Some(FRValueNumber(f))
-    | IEvString(f) => Some(FRValueString(f))
-    | IEvDistribution(f) => Some(FRValueDistOrNumber(FRValueDist(f)))
-    | IEvLambda(f) => Some(FRValueLambda(f))
-    | IEvArray(elements) =>
-      elements->E.A2.fmap(toFrValue)->E.A.O.openIfAllSome->E.O2.fmap(r => FRValueArray(r))
-    | IEvRecord(map) =>
-      Belt.Map.String.toArray(map)
-      ->E.A2.fmap(((key, item)) => item->toFrValue->E.O2.fmap(o => (key, o)))
-      ->E.A.O.openIfAllSome
-      ->E.O2.fmap(r => FRValueRecord(r))
-    | _ => None
-    }
-
-  let rec matchWithExpressionValue = (t: t, r: Reducer_T.value): option<frValue> =>
     switch (t, r) {
-    | (FRTypeAny, f) => toFrValue(f)
+    | (FRTypeAny, _) => true
-    | (FRTypeString, IEvString(f)) => Some(FRValueString(f))
+    | (FRTypeString, IEvString(_)) => true
-    | (FRTypeNumber, IEvNumber(f)) => Some(FRValueNumber(f))
+    | (FRTypeNumber, IEvNumber(_)) => true
-    | (FRTypeBool, IEvBool(f)) => Some(FRValueBool(f))
+    | (FRTypeBool, IEvBool(_)) => true
-    | (FRTypeDate, IEvDate(f)) => Some(FRValueDate(f))
+    | (FRTypeDate, IEvDate(_)) => true
-    | (FRTypeTimeDuration, IEvTimeDuration(f)) => Some(FRValueTimeDuration(f))
+    | (FRTypeTimeDuration, IEvTimeDuration(_)) => true
-    | (FRTypeDistOrNumber, IEvNumber(f)) => Some(FRValueDistOrNumber(FRValueNumber(f)))
+    | (FRTypeDistOrNumber, IEvNumber(_)) => true
-    | (FRTypeDistOrNumber, IEvDistribution(Symbolic(#Float(f)))) =>
+    | (FRTypeDistOrNumber, IEvDistribution(_)) => true
-      Some(FRValueDistOrNumber(FRValueNumber(f)))
+    | (FRTypeDist, IEvDistribution(_)) => true
-    | (FRTypeDistOrNumber, IEvDistribution(f)) => Some(FRValueDistOrNumber(FRValueDist(f)))
+    | (FRTypeNumeric, IEvNumber(_)) => true
-    | (FRTypeDist, IEvDistribution(f)) => Some(FRValueDist(f))
+    | (FRTypeNumeric, IEvDistribution(Symbolic(#Float(_)))) => true
-    | (FRTypeNumeric, IEvNumber(f)) => Some(FRValueNumber(f))
+    | (FRTypeLambda, IEvLambda(_)) => true
-    | (FRTypeNumeric, IEvDistribution(Symbolic(#Float(f)))) => Some(FRValueNumber(f))
-    | (FRTypeLambda, IEvLambda(f)) => Some(FRValueLambda(f))
     | (FRTypeArray(intendedType), IEvArray(elements)) => {
-        let el = elements->E.A2.fmap(matchWithExpressionValue(intendedType))
+        elements->Belt.Array.every(v => matchWithValue(intendedType, v))
-        E.A.O.openIfAllSome(el)->E.O2.fmap(r => FRValueArray(r))
       }
     | (FRTypeDict(r), IEvRecord(map)) =>
-      map
+      map->Belt.Map.String.valuesToArray->Belt.Array.every(v => matchWithValue(r, v))
-      ->Belt.Map.String.toArray
-      ->E.A2.fmap(((key, item)) => matchWithExpressionValue(r, item)->E.O2.fmap(o => (key, o)))
-      ->E.A.O.openIfAllSome
-      ->E.O2.fmap(r => FRValueDict(Js.Dict.fromArray(r)))
     | (FRTypeRecord(recordParams), IEvRecord(map)) => {
-        let getAndMatch = (name, input) =>
+      recordParams->Belt.Array.every(((name, input)) => {
-          Belt.Map.String.get(map, name)->E.O.bind(matchWithExpressionValue(input))
+        switch map->Belt.Map.String.get(name) {
-        //All names in the type must be present. If any are missing, the corresponding
+          | Some(v) => matchWithValue(input, v)
-        //value will be None, and this function would return None.
+          | None => false
-        let namesAndValues: array<option<(Js.Dict.key, frValue)>> =
+        }
-          recordParams->E.A2.fmap(((name, input)) =>
+      })
-            getAndMatch(name, input)->E.O2.fmap(match => (name, match))
+    }
-          )
+    | _ => false
-        namesAndValues->E.A.O.openIfAllSome->E.O2.fmap(r => FRValueRecord(r))
-      }
-    | _ => None
     }
 
-  let rec matchReverse = (e: frValue): Reducer_T.value =>
+  let matchWithValueArray = (inputs: array<t>, args: array<Reducer_T.value>): bool => {
-    switch e {
-    | FRValueNumber(f) => IEvNumber(f)
-    | FRValueBool(f) => IEvBool(f)
-    | FRValueDate(f) => IEvDate(f)
-    | FRValueTimeDuration(f) => IEvTimeDuration(f)
-    | FRValueDistOrNumber(FRValueNumber(n)) => IEvNumber(n)
-    | FRValueDistOrNumber(FRValueDist(n)) => IEvDistribution(n)
-    | FRValueDist(dist) => IEvDistribution(dist)
-    | FRValueArray(elements) => IEvArray(elements->E.A2.fmap(matchReverse))
-    | FRValueRecord(frValueRecord) => {
-        let map =
-          frValueRecord
-          ->E.A2.fmap(((name, value)) => (name, matchReverse(value)))
-          ->Belt.Map.String.fromArray
-        IEvRecord(map)
-      }
-    | FRValueDict(frValueRecord) => {
-        let map =
-          frValueRecord
-          ->Js.Dict.entries
-          ->E.A2.fmap(((name, value)) => (name, matchReverse(value)))
-          ->Belt.Map.String.fromArray
-        IEvRecord(map)
-      }
-    | FRValueLambda(l) => IEvLambda(l)
-    | FRValueString(string) => IEvString(string)
-    | FRValueVariant(string) => IEvString(string)
-    | FRValueAny(f) => matchReverse(f)
-    }
-
-  let matchWithExpressionValueArray = (inputs: array<t>, args: array<Reducer_T.value>): option<
-    array<frValue>,
-  > => {
     let isSameLength = E.A.length(inputs) == E.A.length(args)
     if !isSameLength {
-      None
+      false
     } else {
       E.A.zip(inputs, args)
-      ->E.A2.fmap(((input, arg)) => matchWithExpressionValue(input, arg))
+      ->Belt.Array.every(((input, arg)) => matchWithValue(input, arg))
-      ->E.A.O.openIfAllSome
     }
   }
 }
@@ -202,11 +119,7 @@ module FnDefinition = {
   }
 
   let isMatch = (t: t, args: array<Reducer_T.value>) => {
-    let argValues = FRType.matchWithExpressionValueArray(t.inputs, args)
+    FRType.matchWithValueArray(t.inputs, args)
-    switch argValues {
-    | Some(_) => true
-    | None => false
-    }
   }
 
   let run = (
@@ -215,10 +128,9 @@ module FnDefinition = {
     env: Reducer_T.environment,
     reducer: Reducer_T.reducerFn,
   ) => {
-    let argValues = FRType.matchWithExpressionValueArray(t.inputs, args)
+    switch t->isMatch(args) {
-    switch argValues {
+    | true => t.run(args, env, reducer)
-    | Some(values) => t.run(args, values, env, reducer)
+    | false => REOther("Incorrect Types")->Error
-    | None => REOther("Incorrect Types")->Error
     }
   }
 

packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Helpers.res

@@ -21,27 +21,30 @@ module Wrappers = {
 let getOrError = (a, g) => E.A.get(a, g) |> E.O.toResult(impossibleErrorString)
 
 module Prepare = {
-  type t = frValue
+  type t = value
-  type ts = array<frValue>
+  type ts = array<value>
   type err = string
 
   module ToValueArray = {
     module Record = {
-      let twoArgs = (inputs: ts): result<ts, err> =>
+      let twoArgs = (inputs: ts, (arg1: string, arg2: string)): result<ts, err> =>
         switch inputs {
-        | [FRValueRecord([(_, n1), (_, n2)])] => Ok([n1, n2])
+        | [IEvRecord(map)] => {
+          let n1 = map->Belt.Map.String.getExn(arg1)
+          let n2 = map->Belt.Map.String.getExn(arg2)
+          Ok([n1, n2])
+        }
         | _ => Error(impossibleErrorString)
         }
 
-      let threeArgs = (inputs: ts): result<ts, err> =>
+      let threeArgs = (inputs: ts, (arg1: string, arg2: string, arg3: string)): result<ts, err> =>
         switch inputs {
-        | [FRValueRecord([(_, n1), (_, n2), (_, n3)])] => Ok([n1, n2, n3])
+        | [IEvRecord(map)] => {
-        | _ => Error(impossibleErrorString)
+          let n1 = map->Belt.Map.String.getExn(arg1)
+          let n2 = map->Belt.Map.String.getExn(arg2)
+          let n3 = map->Belt.Map.String.getExn(arg3)
+          Ok([n1, n2, n3])
         }
-
-      let toArgs = (inputs: ts): result<ts, err> =>
-        switch inputs {
-        | [FRValueRecord(args)] => args->E.A2.fmap(((_, b)) => b)->Ok
         | _ => Error(impossibleErrorString)
         }
     }
@@ -49,13 +52,13 @@ module Prepare = {
     module Array = {
       let openA = (inputs: t): result<ts, err> =>
         switch inputs {
-        | FRValueArray(n) => Ok(n)
+        | IEvArray(n) => Ok(n)
         | _ => Error(impossibleErrorString)
         }
 
       let arrayOfArrays = (inputs: t): result<array<ts>, err> =>
         switch inputs {
-        | FRValueArray(n) => n->E.A2.fmap(openA)->E.A.R.firstErrorOrOpen
+        | IEvArray(n) => n->E.A2.fmap(openA)->E.A.R.firstErrorOrOpen
         | _ => Error(impossibleErrorString)
         }
     }
@@ -64,7 +67,10 @@ module Prepare = {
   module ToValueTuple = {
     let twoDistOrNumber = (values: ts): result<(frValueDistOrNumber, frValueDistOrNumber), err> => {
       switch values {
-      | [FRValueDistOrNumber(a1), FRValueDistOrNumber(a2)] => Ok(a1, a2)
+      | [IEvDistribution(a1), IEvDistribution(a2)] => Ok(FRValueDist(a1), FRValueDist(a2))
+      | [IEvDistribution(a1), IEvNumber(a2)] => Ok(FRValueDist(a1), FRValueNumber(a2))
+      | [IEvNumber(a1), IEvDistribution(a2)] => Ok(FRValueNumber(a1), FRValueDist(a2))
+      | [IEvNumber(a1), IEvNumber(a2)] => Ok(FRValueNumber(a1), FRValueNumber(a2))
       | _ => Error(impossibleErrorString)
       }
     }
@@ -74,66 +80,54 @@ module Prepare = {
       err,
     > => {
       switch values {
-      | [FRValueDist(a1), FRValueDist(a2)] => Ok(a1, a2)
+      | [IEvDistribution(a1), IEvDistribution(a2)] => Ok(a1, a2)
       | _ => Error(impossibleErrorString)
       }
     }
 
     let twoNumbers = (values: ts): result<(float, float), err> => {
       switch values {
-      | [FRValueNumber(a1), FRValueNumber(a2)] => Ok(a1, a2)
+      | [IEvNumber(a1), IEvNumber(a2)] => Ok(a1, a2)
       | _ => Error(impossibleErrorString)
       }
     }
 
     let threeNumbers = (values: ts): result<(float, float, float), err> => {
       switch values {
-      | [FRValueNumber(a1), FRValueNumber(a2), FRValueNumber(a3)] => Ok(a1, a2, a3)
+      | [IEvNumber(a1), IEvNumber(a2), IEvNumber(a3)] => Ok(a1, a2, a3)
       | _ => Error(impossibleErrorString)
       }
     }
 
     let oneDistOrNumber = (values: ts): result<frValueDistOrNumber, err> => {
       switch values {
-      | [FRValueDistOrNumber(a1)] => Ok(a1)
+      | [IEvNumber(a1)] => FRValueNumber(a1)->Ok
+      | [IEvDistribution(a2)] => FRValueDist(a2)->Ok
       | _ => Error(impossibleErrorString)
       }
     }
 
     module Record = {
-      let twoDistOrNumber = (values: ts): result<(frValueDistOrNumber, frValueDistOrNumber), err> =>
+      let twoDistOrNumber = (values: ts, labels: (string, string)): result<(frValueDistOrNumber, frValueDistOrNumber), err> =>
-        values->ToValueArray.Record.twoArgs->E.R.bind(twoDistOrNumber)
+        values->ToValueArray.Record.twoArgs(labels)->E.R.bind(twoDistOrNumber)
 
-      let twoDist = (values: ts): result<
+      let twoDist = (values: ts, labels: (string, string)): result<
         (DistributionTypes.genericDist, DistributionTypes.genericDist),
         err,
-      > => values->ToValueArray.Record.twoArgs->E.R.bind(twoDist)
+      > => values->ToValueArray.Record.twoArgs(labels)->E.R.bind(twoDist)
     }
   }
 
-  module ToArrayRecordPairs = {
+  let oneNumber = (value: t): result<float, err> => {
-    let twoArgs = (input: t): result<array<ts>, err> => {
+    switch value {
-      let array = input->ToValueArray.Array.openA
+    | IEvNumber(a1) => Ok(a1)
-      let pairs =
-        array->E.R.bind(pairs =>
-          pairs
-          ->E.A2.fmap(xyCoord => [xyCoord]->ToValueArray.Record.twoArgs)
-          ->E.A.R.firstErrorOrOpen
-        )
-      pairs
-    }
-  }
-
-  let oneNumber = (values: t): result<float, err> => {
-    switch values {
-    | FRValueNumber(a1) => Ok(a1)
     | _ => Error(impossibleErrorString)
     }
   }
 
-  let oneDict = (values: t): result<Js.Dict.t<frValue>, err> => {
+  let oneDict = (value: t): result<Reducer_T.map, err> => {
-    switch values {
+    switch value {
-    | FRValueDict(a1) => Ok(a1)
+    | IEvRecord(a1) => Ok(a1)
     | _ => Error(impossibleErrorString)
     }
   }
@@ -145,7 +139,7 @@ module Prepare = {
       inputs->getOrError(0)->E.R.bind(ToValueArray.Array.openA)->E.R.bind(openNumbers)
     }
 
-    let dicts = (inputs: ts): Belt.Result.t<array<Js.Dict.t<frValue>>, err> => {
+    let dicts = (inputs: ts): Belt.Result.t<array<Reducer_T.map>, err> => {
       let openDicts = (elements: array<t>) => elements->E.A2.fmap(oneDict)->E.A.R.firstErrorOrOpen
       inputs->getOrError(0)->E.R.bind(ToValueArray.Array.openA)->E.R.bind(openDicts)
     }
@@ -226,7 +220,7 @@ module DefineFn = {
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeNumber],
-        ~run=(inputs, _, _, _) => {
+        ~run=(inputs, _, _) => {
           switch inputs {
           | [IEvNumber(x)] => fn(x)->IEvNumber->Ok
           | _ => Error(impossibleError)
@@ -238,7 +232,7 @@ module DefineFn = {
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeNumber, FRTypeNumber],
-        ~run=(inputs, _, _, _) => {
+        ~run=(inputs, _, _) => {
           switch inputs {
           | [IEvNumber(x), IEvNumber(y)] => fn(x, y)->IEvNumber->Ok
           | _ => Error(impossibleError)
@@ -250,7 +244,7 @@ module DefineFn = {
       FnDefinition.make(
         ~name,
         ~inputs=[FRTypeNumber, FRTypeNumber, FRTypeNumber],
-        ~run=(inputs, _, _, _) => {
+        ~run=(inputs, _, _) => {
           switch inputs {
           | [IEvNumber(x), IEvNumber(y), IEvNumber(z)] => fn(x, y, z)->IEvNumber->Ok
           | _ => Error(impossibleError)
@@ -298,7 +292,7 @@ module Make = {
         FnDefinition.make(
           ~name,
           ~inputs=[FRTypeNumber],
-          ~run=(inputs, _, _, _) =>
+          ~run=(inputs, _, _) =>
             switch inputs {
             | [IEvNumber(x)] => fn(x)->IEvNumber->Ok
             | _ => Error(impossibleError)
@@ -328,7 +322,7 @@ module Make = {
         FnDefinition.make(
           ~name,
           ~inputs=[FRTypeNumber, FRTypeNumber],
-          ~run=(inputs, _, _, _) =>
+          ~run=(inputs, _, _) =>
             switch inputs {
             | [IEvNumber(x), IEvNumber(y)] => fn(x, y)->IEvNumber->Ok
             | _ => Error(impossibleError)
@@ -358,7 +352,7 @@ module Make = {
         FnDefinition.make(
           ~name,
           ~inputs=[FRTypeNumber, FRTypeNumber],
-          ~run=(inputs, _, _, _) =>
+          ~run=(inputs, _, _) =>
             switch inputs {
             | [IEvNumber(x), IEvNumber(y)] => fn(x, y)->IEvBool->Ok
             | _ => Error(impossibleError)
@@ -388,7 +382,7 @@ module Make = {
         FnDefinition.make(
           ~name,
           ~inputs=[FRTypeBool, FRTypeBool],
-          ~run=(inputs, _, _, _) =>
+          ~run=(inputs, _, _) =>
             switch inputs {
             | [IEvBool(x), IEvBool(y)] => fn(x, y)->IEvBool->Ok
             | _ => Error(impossibleError)