linqjs Wiki & Documentation Rss Feed

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neuecc — Tue, 09 Oct 2012 13:44:08 GMT

Project Description
linq.js - LINQ for JavaScript

Features

implement all .NET 4.0 methods and many extra methods (inspiration from Rx, Achiral, Haskell, Ruby, etc...)
complete lazy evaluation
full IntelliSense support for VisualStudio
two versions - linq.js and jquery.linq.js (jQuery plugin)
support Windows Script Host
binding for Reactive Extensions for JavaScript(RxJS) and IntelliSense Generator -> see documentation
NuGet install support(linq.js, linq.js-jQuery, linq.js-Bindings)

90 Methods

Aggregate, All, Alternate, Any, Average, BufferWithCount, CascadeBreadthFirst, CascadeDepthFirst, Catch, Choice, Concat,
Contains, Count, Cycle, DefaultIfEmpty, Distinct, Do, ElementAt, ElementAtOrDefault, Empty, Except, Finally, First, FirstOrDefault,
Flatten, ForEach, Force, From, Generate, GetEnumerator, GroupBy, GroupJoin, IndexOf, Insert, Intersect, Join, Last, LastIndexOf,
LastOrDefault, Let, Matches, Max, MaxBy, MemoizeAll, Min, MinBy, OfType, OrderBy, OrderByDescending, Pairwise, PartitionBy,
Range, RangeDown, RangeTo, Repeat, RepeatWithFinalize, Return, Reverse, Scan, Select, SelectMany, SequenceEqual, Share, Shuffle,
Single, SingleOrDefault, Skip, SkipWhile, Sum, Take, TakeExceptLast, TakeFromLast, TakeWhile, ThenBy, ThenByDescending, ToArray,
ToDictionary, ToInfinity,ToJSON, ToLookup, ToNegativeInfinity, ToObject, ToString, Trace, Unfold, Union, Where, Write, WriteLine, Zip

see details - linq.js Reference & LINQPad

Starting linq.js ver.3.0.0-beta!(2012/07/19)

Get the ver.3.0.3-Beta4 @2012/10/09
or NuGet Install-Package linq.js -Pre, linq.js-jQuery -Pre, linq.js-RxJS -Pre, linq.js-QUnit -Pre
Now TypeScript support!

Please try it! and give me a feedback!
http://linqjs.codeplex.com/discussions/376207

Query objects or json

sample from http://twitter.com/statuses/public_timeline.json

var jsonArray = [
    { "user": { "id": 100, "screen_name": "d_linq" }, "text": "to objects" },
    { "user": { "id": 130, "screen_name": "c_bill" }, "text": "g" },
    { "user": { "id": 155, "screen_name": "b_mskk" }, "text": "kabushiki kaisha" },
    { "user": { "id": 301, "screen_name": "a_xbox" }, "text": "halo reach" }
]
// ["b_mskk:kabushiki kaisha", "c_bill:g", "d_linq:to objects"]
var queryResult = Enumerable.From(jsonArray)
    .Where(function (x) { return x.user.id < 200 })
    .OrderBy(function (x) { return x.user.screen_name })
    .Select(function (x) { return x.user.screen_name + ':' + x.text })
    .ToArray();
// shortcut! string lambda selector
var queryResult2 = Enumerable.From(jsonArray)
    .Where("$.user.id < 200")
    .OrderBy("$.user.screen_name")
    .Select("$.user.screen_name + ':' + $.text")
    .ToArray();

High compatibility with C# Linq

// C# LINQ (delegate)
Enumerable.Range(1, 10)
    .Where(delegate(int i) { return i % 3 == 0; })
    .Select(delegate(int i) { return i * 10; });
// linq.js - anonymous function
Enumerable.Range(1, 10)
    .Where(function(i) { return i % 3 == 0; })
    .Select(function(i) { return i * 10; });
// C# LINQ (lambda)
Enumerable.Range(1, 10).Where(i => i % 3 == 0).Select(i => i * 10);
// linq.js - lambda expression
Enumerable.Range(1, 10).Where("i => i % 3 == 0").Select("i => i * 10");
// $ is default iterator variable like Scala's "_" or Groovy's "it"
Enumerable.Range(1, 10).Where("$ % 3 == 0").Select("$ * 10");
 // "" is shorthand of "x => x" (identity function)
Enumerable.Range(4, 7).Join(Enumerable.Range(8, 5), "", "", "outer,inner=>outer*inner");

// Enumerable.From is wrap from primitive array, string(to charArray), object(to KeyValuePair[]) etc..
var array = [100, 200, 30, 40, 500, 40, 200];
var ex1 = Enumerable.From(array).Distinct().ToArray(); // [100, 200, 30, 40, 500]
var ex2 = Enumerable.From("foobar").ToArray(); // ["f", "o", "o", "b", "a", "r"];
var ex3 = Enumerable.From({foo:10, bar:20}).ToArray(); // [{Key:"foo",Value:10}, {Key:"bar",Value:20}]

// C# - AnonymousType
array.Select((val, i) => new { Value = val, Index = i });
// linq.js - object literal
Enumerable.From(array).Select("val,i=>{Value:val, Index:i}")

jQuery plugin version

// $.Enumerable
$.Enumerable.Range(1, 10).Where("$%2==0").ForEach("alert($)");

// TojQuery - Enumerable to jQuery
$.Enumerable.Range(1, 10)
    .Select(function (i) { return $("<option>").text(i)[0] })
    .TojQuery()
    .appendTo("#select1");

// toEnumerable - jQuery to Enumerable
var sum = $("#select1").children()
    .toEnumerable()
    .Select("parseInt($.text())")
    .Sum(); // 55

IntelliSense vsdoc

video - using with Visual Studio 2010

RxNET	linq.js
EnumerableEx.Defer	Enumerable.Empty().Let(enumerableFactory)
EnumerableEx.Generate	Enumerable.Unfold
EnumerableEx.Using	Enumerable.RepeatWithFinalize
SumEnumerable	Let(function (x) { return Enumerable.Return(x.Sum()) })
DistinctUntilChanged	PartitionBy("", "", function (key, group) { return group.First() })
	PartitionBy("", "", "$$.First()")
IsEmpty	!Any()
Run	ForEach
StartWith	Insert(0, second)
TakeLast	TakeFromLast
SkipLast	TakeExceptLast

linqjs Wiki & Documentation Rss Feed

Updated Wiki: Home

Starting linq.js ver.3.0.0-beta!(2012/07/19)

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Starting linq.js ver.3.0.0-beta!(2012/07/19)

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Starting linq.js ver.3.0.0-beta!(2012/07/19)

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Starting linq.js ver.3.0.0-beta!(2012/07/19)

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Starting linq.js ver.3.0.0-beta!(2012/07/19)

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

New Comment on "linq.js Samples"

Updated Wiki: Home

Questionnaire(2011/09/18)

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Questionnaire

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc

with Windows Script Host

Updated Wiki: Home

Query objects or json

High compatibility with C# Linq

jQuery plugin version

IntelliSense vsdoc