Added math functions

2020-02-06 21:05:13 +00:00 · 2020-02-06 21:05:13 +00:00 · 8fdcc99231
commit 8fdcc99231
parent eecfd765f3
11 changed files with 146 additions and 62 deletions
--- a/index.html
+++ b/index.html
@ -1,9 +1,11 @@
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
  <meta charset="UTF-8">
  <title>ReasonReact Examples</title>
 </head>
+
 <body>
  <script>
    // stub a variable ReactJS checks. ReactJS assumes you're using a bundler, NodeJS or similar system that provides it the `process.env.NODE_ENV` variable.
@ -19,4 +21,5 @@
  <!-- Our little watcher. Super clean. Check it out! -->
  <script src="/watcher.js"></script>
 </body>
+
 </html>
--- a/src/EAFunds.bs.js
+++ b/src/EAFunds.bs.js
@ -1,5 +1,10 @@
 'use strict';

+var Math$ReasonReactExamples = require("./Math.bs.js");
+
+function yearDiff(year) {
+  return year - 2020.0;
+}

 function yearlyMeanGrowthRateIfNotClosed(group) {
  return {
@ -8,29 +13,63 @@ function yearlyMeanGrowthRateIfNotClosed(group) {
        };
 }

-function yearlyChanceOfClosing(group) {
-  return 0.1;
+function calculateDifference(currentValue, yearInQuestion, y) {
+  var yearDiff = yearInQuestion - 2020.0;
+  var meanDiff = Math.pow(y.meanDiff, yearDiff);
+  var stdDevDiff = Math.pow(y.meanDiff, yearDiff);
+  return Math$ReasonReactExamples.normal(currentValue * meanDiff, 0.2 * stdDevDiff);
 }

-function yearlyStdevGrowthRate(group, year, parameter) {
+function currentValue(group, parameter) {
  if (group) {
-    return /* tuple */[
-            30,
-            30
-          ];
+    switch (group[0]) {
+      case /* ANIMAL_WELFARE */0 :
+          if (parameter) {
+            return 2300000.0;
+          } else {
+            return 300000.0;
+          }
+      case /* GLOBAL_HEALTH */1 :
+          if (parameter) {
+            return 500000.0;
+          } else {
+            return 1000000.0;
+          }
+      case /* LONG_TERM_FUTURE */2 :
+          if (parameter) {
+            return 120000.0;
+          } else {
+            return 600000.0;
+          }
+      case /* META */3 :
+          if (parameter) {
+            return 830000.0;
+          } else {
+            return 9300000.0;
+          }
+      
+    }
  } else {
-    return /* tuple */[
-            50,
-            10
-          ];
+    return currentValue(/* Fund */[/* ANIMAL_WELFARE */0], parameter) + currentValue(/* Fund */[/* GLOBAL_HEALTH */1], parameter) + currentValue(/* Fund */[/* LONG_TERM_FUTURE */2], parameter) + currentValue(/* Fund */[/* META */3], parameter);
  }
 }

 var PayoutsIfAround = {
+  currentYear: 2020,
+  firstYearStdDev: 0.2,
+  yearDiff: yearDiff,
  yearlyMeanGrowthRateIfNotClosed: yearlyMeanGrowthRateIfNotClosed,
-  yearlyChanceOfClosing: yearlyChanceOfClosing,
-  yearlyStdevGrowthRate: yearlyStdevGrowthRate
+  calculateDifference: calculateDifference,
+  currentValue: currentValue
 };

+function calculate(group, year, parameter) {
+  return calculateDifference(currentValue(group, parameter), year, {
+              meanDiff: 1.1,
+              stdDiff: 1.1
+            });
+}
+
 exports.PayoutsIfAround = PayoutsIfAround;
+exports.calculate = calculate;
 /* No side effect */
--- a/src/EAFunds.re
+++ b/src/EAFunds.re
@ -9,7 +9,6 @@ type group =
  | All;

 type parameter =
-  | CHANCE_CLOSED
  | DONATIONS
  | PAYOUTS;

@ -19,21 +18,48 @@ type yearlyNumericDiff = {
 };

 module PayoutsIfAround = {
+  let currentYear = 2020.;
+  let firstYearStdDev = 0.2;
+  let yearDiff = year => year -. 2020.0;
+
  let yearlyMeanGrowthRateIfNotClosed = (group: group): yearlyNumericDiff => {
    {meanDiff: 1.1, stdDiff: 1.1};
  };

-  let yearlyChanceOfClosing = (group: group) => {
-    0.1;
+  let calculateDifference =
+      (currentValue, yearInQuestion, y: yearlyNumericDiff) => {
+    let yearDiff = yearDiff(yearInQuestion);
+    let meanDiff = Js.Math.pow_float(~base=y.meanDiff, ~exp=yearDiff);
+    let stdDevDiff = Js.Math.pow_float(~base=y.meanDiff, ~exp=yearDiff);
+    Math.normal(currentValue *. meanDiff, firstYearStdDev *. stdDevDiff);
  };

-  let yearlyStdevGrowthRate = (group: group, year: int, parameter: parameter) => {
-    switch (group) {
-    | Fund(ANIMAL_WELFARE) => (30, 30)
-    | Fund(GLOBAL_HEALTH) => (30, 30)
-    | Fund(LONG_TERM_FUTURE) => (30, 30)
-    | Fund(META) => (30, 30)
-    | All => (50, 10)
+  let rec currentValue = (group: group, parameter) => {
+    let sum = (): float =>
+      currentValue(Fund(ANIMAL_WELFARE), parameter)
+      +. currentValue(Fund(GLOBAL_HEALTH), parameter)
+      +. currentValue(Fund(LONG_TERM_FUTURE), parameter)
+      +. currentValue(Fund(META), parameter);
+    switch (group, parameter) {
+    | (Fund(ANIMAL_WELFARE), DONATIONS) => 300000.0
+    | (Fund(ANIMAL_WELFARE), PAYOUTS) => 2300000.0
+    | (Fund(GLOBAL_HEALTH), DONATIONS) => 1000000.0
+    | (Fund(GLOBAL_HEALTH), PAYOUTS) => 500000.0
+    | (Fund(LONG_TERM_FUTURE), DONATIONS) => 600000.0
+    | (Fund(LONG_TERM_FUTURE), PAYOUTS) => 120000.0
+    | (Fund(META), DONATIONS) => 9300000.0
+    | (Fund(META), PAYOUTS) => 830000.0
+    | (All, _) => sum()
    };
  };
 };
+
+let calculate = (group: group, year: float, parameter: parameter) => {
+  PayoutsIfAround.(
+    calculateDifference(
+      currentValue(group, parameter),
+      year,
+      yearlyMeanGrowthRateIfNotClosed(group),
+    )
+  );
+};
--- a/src/FetchedDogPictures/FetchedDogPictures.bs.js
+++ b/src/FetchedDogPictures/FetchedDogPictures.bs.js
@ -11,7 +11,7 @@ function FetchedDogPictures(Props) {
  var setState = match[1];
  var state = match[0];
  React.useEffect((function () {
-          fetch("https://dog.ceo/api/breeds/image/random/3").then((function (response) {
+          fetch("https://dog.ceo/api/breeds/image/random/2").then((function (response) {
                      return response.json();
                    })).then((function (jsonResponse) {
                    Curry._1(setState, (function (_previousState) {
--- a/src/FetchedDogPictures/FetchedDogPictures.re
+++ b/src/FetchedDogPictures/FetchedDogPictures.re
@ -13,7 +13,7 @@ let make = () => {
  // reasonml.github.io/reason-react/docs/en/components#hooks for more info
  React.useEffect0(() => {
    Js.Promise.(
-      fetch("https://dog.ceo/api/breeds/image/random/3")
+      fetch("https://dog.ceo/api/breeds/image/random/2")
      |> then_(response => response##json())
      |> then_(jsonResponse => {
           setState(_previousState => LoadedDogs(jsonResponse##message));
--- a/src/Funds.bs.js
+++ b/src/Funds.bs.js
@ -0,0 +1,16 @@
+'use strict';
+
+var React = require("react");
+var EAFunds$ReasonReactExamples = require("./EAFunds.bs.js");
+
+var response = EAFunds$ReasonReactExamples.calculate(/* Fund */[/* GLOBAL_HEALTH */1], 2029, /* DONATIONS */0);
+
+function Funds(Props) {
+  return React.createElement("div", undefined, response);
+}
+
+var make = Funds;
+
+exports.response = response;
+exports.make = make;
+/* response Not a pure module */
--- a/src/Funds.re
+++ b/src/Funds.re
@ -0,0 +1,6 @@
+let response = EAFunds.calculate(Fund(GLOBAL_HEALTH), 2029., DONATIONS);
+
+[@react.component]
+let make = () => {
+  <div> {React.string(response)} </div>;
+};
--- a/src/Index.bs.js
+++ b/src/Index.bs.js
@ -2,11 +2,8 @@

 var React = require("react");
 var ReactDom = require("react-dom");
+var Funds$ReasonReactExamples = require("./Funds.bs.js");
 var ExampleStyles$ReasonReactExamples = require("./ExampleStyles.bs.js");
-var BlinkingGreeting$ReasonReactExamples = require("./BlinkingGreeting/BlinkingGreeting.bs.js");
-var FetchedDogPictures$ReasonReactExamples = require("./FetchedDogPictures/FetchedDogPictures.bs.js");
-var ReducerFromReactJSDocs$ReasonReactExamples = require("./ReducerFromReactJSDocs/ReducerFromReactJSDocs.bs.js");
-var ReasonUsingJSUsingReason$ReasonReactExamples = require("./ReasonUsingJSUsingReason/ReasonUsingJSUsingReason.bs.js");

 var style = document.createElement("style");

@ -28,15 +25,7 @@ function makeContainer(text) {
  return content;
 }

-ReactDom.render(React.createElement(BlinkingGreeting$ReasonReactExamples.make, {
-          children: "Hello!"
-        }), makeContainer("Blinking Greeting"));
-
-ReactDom.render(React.createElement(ReducerFromReactJSDocs$ReasonReactExamples.make, { }), makeContainer("Reducer From ReactJS Docs"));
-
-ReactDom.render(React.createElement(FetchedDogPictures$ReasonReactExamples.make, { }), makeContainer("Fetched Dog Pictures"));
-
-ReactDom.render(React.createElement(ReasonUsingJSUsingReason$ReasonReactExamples.make, { }), makeContainer("Reason Using JS Using Reason"));
+ReactDom.render(React.createElement(Funds$ReasonReactExamples.make, { }), makeContainer("Reason Using JS Using Reason"));

 exports.style = style;
 exports.makeContainer = makeContainer;
--- a/src/Index.re
+++ b/src/Index.re
@ -27,25 +27,4 @@ let makeContainer = text => {
  content;
 };

-// All 4 examples.
-ReactDOMRe.render(
-  <BlinkingGreeting>
-    {React.string("Hello!")}
-  </BlinkingGreeting>,
-  makeContainer("Blinking Greeting"),
-);
-
-ReactDOMRe.render(
-  <ReducerFromReactJSDocs />,
-  makeContainer("Reducer From ReactJS Docs"),
-);
-
-ReactDOMRe.render(
-  <FetchedDogPictures />,
-  makeContainer("Fetched Dog Pictures"),
-);
-
-ReactDOMRe.render(
-  <ReasonUsingJSUsingReason />,
-  makeContainer("Reason Using JS Using Reason"),
-);
+ReactDOMRe.render(<Funds />, makeContainer("Reason Using JS Using Reason"));
--- a/src/Math.bs.js
+++ b/src/Math.bs.js
@ -0,0 +1,16 @@
+'use strict';
+
+
+function normal(mean, std) {
+  var nMean = mean.toPrecision(4);
+  var nStd = std.toPrecision(2);
+  return "normal(" + (String(nMean) + (", " + (String(nStd) + ")")));
+}
+
+function divide(str1, str2) {
+  return "" + (String(str1) + ("/" + (String(str2) + "")));
+}
+
+exports.normal = normal;
+exports.divide = divide;
+/* No side effect */
--- a/src/Math.re
+++ b/src/Math.re
@ -0,0 +1,10 @@
+let normal = (mean: float, std: float) =>
+  Js.Float.(
+    {
+      let nMean = toPrecisionWithPrecision(mean, ~digits=4);
+      let nStd = toPrecisionWithPrecision(std, ~digits=2);
+      {j|normal($(nMean), $(nStd))|j};
+    }
+  );
+
+let divide = (str1: string, str2: string) => {j|$(str1)/$(str2)|j};