diff --git a/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.res b/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.res
index e956a303..56a086ca 100644
--- a/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.res
+++ b/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.res
@@ -29,7 +29,7 @@ let normalize = (t: t) =>
   | #SampleSet(_) => t
   }
 
-let operationToFloat = (toPointSet: toPointSetFn, fnName, t) => {
+let operationToFloat = (t, toPointSet: toPointSetFn, fnName) => {
   let symbolicSolution = switch t {
   | #Symbolic(r) =>
     switch SymbolicDist.T.operate(fnName, r) {
@@ -83,10 +83,10 @@ module Truncate = {
     }
 
   let run = (
+    t: t,
     toPointSet: toPointSetFn,
     leftCutoff: option<float>,
     rightCutoff: option<float>,
-    t: t,
   ): result<t, error> => {
     let doesNotNeedCutoff = E.O.isNone(leftCutoff) && E.O.isNone(rightCutoff)
     if doesNotNeedCutoff {
@@ -95,7 +95,7 @@ module Truncate = {
       switch trySymbolicSimplification(leftCutoff, rightCutoff, t) {
       | Some(r) => Ok(r)
       | None =>
-        toPointSet(t) |> E.R.fmap(t =>
+        toPointSet(t)->E.R.fmap2(t =>
           #PointSet(PointSetDist.T.truncate(leftCutoff, rightCutoff, t))
         )
       }
@@ -134,7 +134,7 @@ module AlgebraicCombination = {
     t1: t,
     t2: t,
   ) =>
-    E.R.merge(toPointSet(t1), toPointSet(t2)) |> E.R.fmap(((a, b)) =>
+    E.R.merge(toPointSet(t1), toPointSet(t2))->E.R.fmap2(((a, b)) =>
       PointSetDist.combineAlgebraically(operation, a, b)
     )
 
@@ -145,8 +145,8 @@ module AlgebraicCombination = {
     t2: t,
   ) => {
     let operation = Operation.Algebraic.toFn(operation)
-    E.R.merge(toSampleSet(t1), toSampleSet(t2)) |> E.R.fmap(((a, b)) => {
-      Belt.Array.zip(a, b) |> E.A.fmap(((a, b)) => operation(a, b))
+    E.R.merge(toSampleSet(t1), toSampleSet(t2)) -> E.R.fmap2(((a, b)) => {
+      Belt.Array.zip(a, b) -> E.A.fmap2(((a, b)) => operation(a, b))
     })
   }
 
@@ -155,7 +155,7 @@ module AlgebraicCombination = {
     switch x {
     | #Symbolic(#Float(_)) => 1
     | #Symbolic(_) => 1000
-    | #PointSet(Discrete(m)) => m.xyShape |> XYShape.T.length
+    | #PointSet(Discrete(m)) => m.xyShape -> XYShape.T.length
     | #PointSet(Mixed(_)) => 1000
     | #PointSet(Continuous(_)) => 1000
     | _ => 1000
@@ -167,10 +167,10 @@ module AlgebraicCombination = {
       : #CalculateWithConvolution
 
   let run = (
+    t1: t,
     toPointSet: toPointSetFn,
     toSampleSet: toSampleSetFn,
     algebraicOp,
-    t1: t,
     t2: t,
   ): result<t, error> => {
     switch tryAnalyticalSimplification(algebraicOp, t1, t2) {
@@ -190,7 +190,7 @@ module AlgebraicCombination = {
 let algebraicCombination = AlgebraicCombination.run
 
 //TODO: Add faster pointwiseCombine fn
-let pointwiseCombination = (toPointSet: toPointSetFn, operation, t2: t, t1: t): result<
+let pointwiseCombination = (t1: t, toPointSet: toPointSetFn, operation, t2: t): result<
   t,
   error,
 > => {
@@ -202,10 +202,10 @@ let pointwiseCombination = (toPointSet: toPointSetFn, operation, t2: t, t1: t):
 }
 
 let pointwiseCombinationFloat = (
+  t: t,
   toPointSet: toPointSetFn,
   operation: GenericDist_Types.Operation.arithmeticOperation,
   f: float,
-  t: t,
 ): result<t, error> => {
   switch operation {
   | #Add | #Subtract => Error(GenericDist_Types.DistributionVerticalShiftIsInvalid)
@@ -227,9 +227,9 @@ let pointwiseCombinationFloat = (
 
 //Note: The result should always cumulatively sum to 1.
 let mixture = (
+  values: array<(t, float)>,
   scaleMultiply: scaleMultiplyFn,
   pointwiseAdd: pointwiseAddFn,
-  values: array<(t, float)>,
 ) => {
   if E.A.length(values) == 0 {
     Error(GenericDist_Types.Other("mixture must have at least 1 element"))
diff --git a/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.resi b/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.resi
index 18dcc0eb..b7d6bb26 100644
--- a/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.resi
+++ b/packages/squiggle-lang/src/rescript/GenericDist/GenericDist.resi
@@ -13,32 +13,32 @@ let toString: t => string
 
 let normalize: t => t
 
-let operationToFloat: (toPointSetFn, Operation.distToFloatOperation, t) => result<float, error>
+let operationToFloat: (t, toPointSetFn, Operation.distToFloatOperation) => result<float, error>
 
 let toPointSet: (t, int) => result<PointSetTypes.pointSetDist, error>
 
-let truncate: (toPointSetFn, option<float>, option<float>, t) => result<t, error>
+let truncate: (t, toPointSetFn, option<float>, option<float>) => result<t, error>
 
 let algebraicCombination: (
+  t,
   toPointSetFn,
   toSampleSetFn,
   GenericDist_Types.Operation.arithmeticOperation,
   t,
-  t,
 ) => result<t, error>
 
 let pointwiseCombination: (
+  t,
   toPointSetFn,
   GenericDist_Types.Operation.arithmeticOperation,
   t,
-  t,
 ) => result<t, error>
 
 let pointwiseCombinationFloat: (
+  t,
   toPointSetFn,
   GenericDist_Types.Operation.arithmeticOperation,
   float,
-  t,
 ) => result<t, error>
 
-let mixture: (scaleMultiplyFn, pointwiseAddFn, array<(t, float)>) => result<t, error>
+let mixture: (array<(t, float)>, scaleMultiplyFn, pointwiseAddFn) => result<t, error>
diff --git a/packages/squiggle-lang/src/rescript/GenericDist/GenericDist_GenericOperation.res b/packages/squiggle-lang/src/rescript/GenericDist/GenericDist_GenericOperation.res
index 8dbdfe5a..c3aa71f8 100644
--- a/packages/squiggle-lang/src/rescript/GenericDist/GenericDist_GenericOperation.res
+++ b/packages/squiggle-lang/src/rescript/GenericDist/GenericDist_GenericOperation.res
@@ -93,7 +93,7 @@ let rec run = (extra, fnName: operation): outputType => {
   let fromDistFn = (subFn: GenericDist_Types.Operation.fromDist, dist: genericDist) =>
     switch subFn {
     | #toFloat(fnName) =>
-      GenericDist.operationToFloat(toPointSet, fnName, dist)->E.R.fmap2(r => #Float(r))->fromResult
+      GenericDist.operationToFloat(dist, toPointSet, fnName)->E.R.fmap2(r => #Float(r))->fromResult
     | #toString => dist->GenericDist.toString->(r => #String(r))
     | #toDist(#consoleLog) => {
         Js.log2("Console log requested: ", dist)
@@ -101,7 +101,7 @@ let rec run = (extra, fnName: operation): outputType => {
       }
     | #toDist(#normalize) => dist->GenericDist.normalize->(r => #Dist(r))
     | #toDist(#truncate(left, right)) =>
-      dist |> GenericDist.truncate(toPointSet, left, right) |> E.R.fmap(r => #Dist(r)) |> fromResult
+      dist->GenericDist.truncate(toPointSet, left, right)->E.R.fmap2(r => #Dist(r))->fromResult
     | #toDist(#toPointSet) =>
       dist->GenericDist.toPointSet(xyPointLength)->E.R.fmap2(r => #Dist(#PointSet(r)))->fromResult
     | #toDist(#toSampleSet(n)) =>
@@ -109,26 +109,26 @@ let rec run = (extra, fnName: operation): outputType => {
     | #toDistCombination(#Algebraic, _, #Float(_)) => #Error(NotYetImplemented)
     | #toDistCombination(#Algebraic, operation, #Dist(dist2)) =>
       dist
-      |> GenericDist.algebraicCombination(toPointSet, toSampleSet, operation, dist2)
-      |> E.R.fmap(r => #Dist(r))
-      |> fromResult
+      ->GenericDist.algebraicCombination(toPointSet, toSampleSet, operation, dist2)
+      ->E.R.fmap2(r => #Dist(r))
+      ->fromResult
     | #toDistCombination(#Pointwise, operation, #Dist(dist2)) =>
       dist
-      |> GenericDist.pointwiseCombination(toPointSet, operation, dist2)
-      |> E.R.fmap(r => #Dist(r))
-      |> fromResult
+      ->GenericDist.pointwiseCombination(toPointSet, operation, dist2)
+      ->E.R.fmap2(r => #Dist(r))
+      ->fromResult
     | #toDistCombination(#Pointwise, operation, #Float(f)) =>
       dist
-      |> GenericDist.pointwiseCombinationFloat(toPointSet, operation, f)
-      |> E.R.fmap(r => #Dist(r))
-      |> fromResult
+      ->GenericDist.pointwiseCombinationFloat(toPointSet, operation, f)
+      ->E.R.fmap2(r => #Dist(r))
+      ->fromResult
     }
 
   switch fnName {
   | #fromDist(subFn, dist) => fromDistFn(subFn, dist)
   | #fromFloat(subFn, float) => reCall(~fnName=#fromDist(subFn, GenericDist.fromFloat(float)), ())
   | #mixture(dists) =>
-    GenericDist.mixture(scaleMultiply, pointwiseAdd, dists)->E.R.fmap2(r => #Dist(r))->fromResult
+    dists->GenericDist.mixture(scaleMultiply, pointwiseAdd)->E.R.fmap2(r => #Dist(r))->fromResult
   }
 }