%PDF-
%PDF-
Mini Shell
Mini Shell
global.Benchmark=require("benchmark");var Lazy=require("../lazy.js"),lodash=require("lodash"),Race=require("race.js"),stringTable=require("string-table");console.log("Racing Lazy.js "+Lazy.VERSION+" against Lodash "+lodash.VERSION);Benchmark.options.maxTime=.5;var selectedRace=null;if(process.argv.length>2){selectedRace=process.argv[2];console.log('Just going to run "'+selectedRace+'" race')}else{console.log("Running all races...")}function identity(x){return x}function increment(x){return x+1}function isEven(x){return x%2===0}function lastLetter(str){return str.charAt(str.length-1)}function randomNumber(min,max){return min+Math.floor(Math.random()*(max-min))}function randomNumbers(count,min,max){var getRandomNumber=function(){return randomNumber(min,max)};return Lazy.generate(getRandomNumber,count).toArray()}function numbersInput(){return Race.inputs.arraysOfIntegers([5,10,100])}function randomNumbersInput(){return Race.inputs.arraysOfRandomIntegers([5,10,100])}function doubleNumbersInput(){return[{name:"2 5-element arrays",values:[Race.utils.integers(5),Race.utils.integers(5,3)],size:5},{name:"2 10-element arrays",values:[Race.utils.integers(10),Race.utils.integers(10,5)],size:10},{name:"2 100-element arrays",values:[Race.utils.integers(100),Race.utils.integers(100,50)],size:100}]}function nestedNumbersInput(){return[{name:"small nested array",values:[[1,2,[3,4,[5,6],7,8],9,10]],size:10},{name:"medium nested array",values:[[1,2,3,[4,5],[6,7,[8,9,10,11],12],13,14,[15,16],17,[18,[19,[20]]]]],size:20}]}function wordsInput(){return Race.inputs.arraysOfStrings([5,10,100])}function evaluateSequence(value,other){if(value instanceof Lazy.Sequence){if(other instanceof Array){return value.toArray()}return value.toObject()}return value}function orderAwareComparer(x,y){x=evaluateSequence(x,y);y=evaluateSequence(y,x);return Race.compare(x,y)}function orderAgnosticComparer(x,y){x=Lazy(x).sortBy(identity).toArray();y=Lazy(y).sortBy(identity).toArray();return Race.compare(x,y)}var marathon=new Race.Marathon;function ensureLazyIteration(impl){return function(){var sequence=Race.fastApply(impl,arguments);sequence.each(function(x,i){});return sequence}}function ensureLodashIteration(impl){return function(){var result=Race.fastApply(impl,arguments);lodash.each(result,function(x,i){});return result}}function addRace(name,inputs,options){if(!selectedRace||name===selectedRace){marathon.add(new Race({description:name,inputs:inputs,impls:{lazy:options.valueOnly?options.lazy:ensureLazyIteration(options.lazy),lodash:options.valueOnly?options.lodash:ensureLodashIteration(options.lodash)},comparer:options.comparer||orderAwareComparer}))}}addRace("map",numbersInput(),{lazy:function(array){return Lazy(array).map(increment)},lodash:function(array){return lodash.map(array,increment)}});addRace("filter",numbersInput(),{lazy:function(array){return Lazy(array).filter(isEven)},lodash:function(array){return lodash.filter(array,isEven)}});addRace("sortBy",wordsInput(),{lazy:function(array){return Lazy(array).sortBy(lastLetter)},lodash:function(array){return lodash.sortBy(array,lastLetter)}});addRace("groupBy",wordsInput(),{lazy:function(array){return Lazy(array).groupBy(lastLetter)},lodash:function(array){return lodash.groupBy(array,lastLetter)}});addRace("countBy",wordsInput(),{lazy:function(array){return Lazy(array).countBy(lastLetter)},lodash:function(array){return lodash.countBy(array,lastLetter)}});addRace("uniq",randomNumbersInput(),{lazy:function(array){return Lazy(array).uniq()},lodash:function(array){return lodash.uniq(array)}});addRace("zip",doubleNumbersInput(),{lazy:function(array,other){return Lazy(array).zip(other)},lodash:function(array,other){return lodash.zip(array,other)}});addRace("shuffle",randomNumbersInput(),{lazy:function(array){return Lazy(array).shuffle()},lodash:function(array){return lodash.shuffle(array)},comparer:orderAgnosticComparer});addRace("flatten",nestedNumbersInput(),{lazy:function(array){return Lazy(array).flatten()},lodash:function(array){return lodash.flatten(array)}});addRace("difference",doubleNumbersInput(),{lazy:function(array,other){return Lazy(array).difference(other)},lodash:function(array,other){return lodash.difference(array,other)}});addRace("union",doubleNumbersInput(),{lazy:function(array,other){return Lazy(array).union(other)},lodash:function(array,other){return lodash.union(array,other)}});addRace("intersection",doubleNumbersInput(),{lazy:function(array,other){return Lazy(array).intersection(other)},lodash:function(array,other){return lodash.intersection(array,other)}});addRace("max",numbersInput(),{lazy:function(array){return Lazy(array).max()},lodash:function(array){return lodash.max(array)},valueOnly:true});addRace("map-max",numbersInput(),{lazy:function(array){return Lazy(array).map(increment).max()},lodash:function(array){return lodash.max(lodash.map(array,increment))},valueOnly:true});addRace("map-filter-max",numbersInput(),{lazy:function(array){return Lazy(array).map(increment).filter(isEven).max()},lodash:function(array){return lodash.max(lodash.filter(lodash.map(array,increment),isEven))},valueOnly:true});function formatWinner(winner){return winner.impl+" (by "+(winner.margin*100).toFixed(2)+"%)"}function formatOverallWinner(resultGroups){var winners=Lazy(resultGroups).countBy(function(resultGroup){return resultGroup.winner.impl}).toObject();if(Object.keys(winners).length===1){return Lazy(winners).keys().first()}var breakdown=Lazy(winners).map(function(count,winner){return winner+" - "+count}).join(", ");return"mixed ("+breakdown+")"}marathon.start({start:function(race){console.log('Starting "'+race.description+'" race...')},result:function(result){console.log(" * "+[result.input.name,result.impl,result.perf.toFixed(3)+" ops/sec"].join("\t"))},mismatch:function(outputs){console.log(' * mismatch for the "'+outputs.input.name+'" case!')},complete:function(resultGroups){console.log(" * WINNER: "+formatOverallWinner(resultGroups));console.log("")},marathonComplete:function(resultGroups){var dataObjects=Lazy(resultGroups).map(function(resultGroup){var dataObject={race:resultGroup.race,"input size":resultGroup.input.size};Lazy(resultGroup.results).each(function(perf,impl){dataObject[impl]=perf});dataObject.winner=formatWinner(resultGroup.winner);return dataObject}).toArray();console.log(stringTable.create(dataObjects,{typeFormatters:{number:function(value){return Number(value.toFixed(3))}},capitalizeHeaders:true}));console.log("")}});
Zerion Mini Shell 1.0