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Directive Implementations (https://jsbench.github.io/#4f3d62eb97bd1c992a5257d34fcebea0) #jsbench #jsperf
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"/> | |
| <title>Directive Implementations</title> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script> | |
| <script src="./suite.js"></script> | |
| </head> | |
| <body> | |
| <h1>Open the console to view the results</h1> | |
| <h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2> | |
| </body> | |
| </html> |
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| "use strict"; | |
| (function (factory) { | |
| if (typeof Benchmark !== "undefined") { | |
| factory(Benchmark); | |
| } else { | |
| factory(require("benchmark")); | |
| } | |
| })(function (Benchmark) { | |
| var suite = new Benchmark.Suite; | |
| Benchmark.prototype.setup = function () { | |
| const directives = new WeakMap(); | |
| function directive(f) { | |
| return (...args) => { | |
| const d = f(...args); | |
| directives.set(d, true); | |
| return d; | |
| }; | |
| } | |
| const adderDirective = directive(x => { | |
| return y => x + y; | |
| }); | |
| function opaque(f, inner) { | |
| return (...args) => { | |
| return {inner, value: f(...args), __isDirective: true}; | |
| }; | |
| } | |
| const adderOpaque = opaque((x) => { | |
| return x; | |
| }, (x, y) => { | |
| return x + y; | |
| }); | |
| function directive2(f) { | |
| return (...args) => { | |
| const d = f(...args); | |
| d.__isDirective = true; | |
| return d; | |
| }; | |
| } | |
| const adderDirective2 = directive2(x => { | |
| return y => x + y; | |
| }); | |
| function directive3(f) { | |
| return (...args) => { | |
| return { | |
| __isDirective: true, | |
| run: f(...args), | |
| }; | |
| }; | |
| } | |
| const adderDirective3 = directive3(x => { | |
| return y => x + y; | |
| }); | |
| let i = 0; | |
| }; | |
| suite.add("Returning closure, branded with WeakMap", function () { | |
| // Returning closure, branded with WeakMap | |
| const add = adderDirective(1); | |
| if (directives.has(add)) { | |
| i += add(2); | |
| } | |
| }); | |
| suite.add("Returning object", function () { | |
| // Returning object | |
| const add = adderOpaque(1); | |
| if (add.__isDirective) { | |
| const inner = add.inner; | |
| i += inner(add.value, 2); | |
| } | |
| }); | |
| suite.add("Returning closure, branded with property", function () { | |
| // Returning closure, branded with property | |
| const add = adderDirective2(1); | |
| if (add.__isDirective) { | |
| i += add(2); | |
| } | |
| }); | |
| suite.add("Returning object with reference to closure, branded with property", function () { | |
| // Returning object with reference to closure, branded with property | |
| const add = adderDirective3(1); | |
| if (add.__isDirective) { | |
| i += add.run(2); | |
| } | |
| }); | |
| suite.on("cycle", function (evt) { | |
| console.log(" - " + evt.target); | |
| }); | |
| suite.on("complete", function (evt) { | |
| console.log(new Array(30).join("-")); | |
| var results = evt.currentTarget.sort(function (a, b) { | |
| return b.hz - a.hz; | |
| }); | |
| results.forEach(function (item) { | |
| console.log((idx + 1) + ". " + item); | |
| }); | |
| }); | |
| console.log("Directive Implementations"); | |
| console.log(new Array(30).join("-")); | |
| suite.run(); | |
| }); |
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