conjs, a fork of mori
A simple bridge to ClojureScript's persistent data structures and supporting APIs for vanilla JavaScript. Pull requests welcome.
Breaking Changes in Conjs 0.4.1
core.async
channel ported from core.async, and aync put, get and alts, natively callback, not generator and statemachines.
var c1 = asyncvar c2 = async asyncasyncasync
and Promise version of channel
async asyncasync
goroutine with generator
just yield
before take or put promise, you'll get a very nice CSP style goroutine
var c = async;asyncasync;
async/await
so if you're using babel with es7 async function
feature, then you'll also get a very nice CSP style of taking, puting and atlsing a Channel.
var a = moriasync;{ var v = await a; } { await a console}{ await a console}
Idiomatic JS method names
instead of
var a = morimorimori
there also JS method of your choice
var a = moria // => 2a // => {1 6, 3 4}
Breaking changes in 0.3.0
The API now uses idiomatic JavaScript naming conventions.
Improvements to 0.3.0
Faster
Mori is considerably faster across the board thanks to recent enhancements to the ClojureScript compiler. For users who would like to benchmark their immutable data structure implementations against Mori, Mori now exposes direct arity invokes which eliminates previous calling overheads from arity dispatching. See Benchmarking for more information.
Mori hash maps now default to ClojureScript ArrayMap
s that are
automatically promoted to PersistentHashMap
s as needed. ArrayMap
s
deliver considerably better performance at small sizes and when simple
keys are at play. For example a Mori hash map with less than or equal
to eight keys can now be built nearly an order of magnitude faster than
Immutable.js 3.6.2 Map
s.
More ES6
All Mori collections support ES6 iteration via foo[Symbol.iterator]
or foo["@@iterator"]
.
Differences from Immutable.js
- A functional API, data structures do not have public methods
- Faster, ClojureScript data structures have been subjected to more real world usage and continuous benchmarking for nearly 4 years
- Larger, gzipped the base Mori module is about 6K larger than Immutable.js
Getting it
You can install the latest release via npm:
npm install con.js
The installed package contains a single optimized JavaScript file mori.js
.
Load mori
in your Node.js programs as you would any other module:
var mori = ;
In a browser, you can load mori with a script tag, as you would any other JavaScript library:
You can also load it as an AMD module, e.g. with RequireJS.
Usage
You can use it from your projects like so:
var { return n+1;}; mori;// => [2,3,4,5,6]
Efficient non-destructive updates!
var v1 = mori;var v2 = mori;v1; // => '[1 2 3]'v2; // => '[1 2 3 4]'
var { return a + b;};mori; // => 10
Lazy sequences!
var _ = mori;_;// => [1, "foo", 2, "foo", 3, "foo", 4]
Or if it's more your speed, use it from CoffeeScript!
= x+1 r = morimap incmorivector12345moriintoArray r
Documentation
You can find extensive documentation and examples here.
More Examples
Efficient Freeze/Thaw
For vectors and maps we provide an efficient thaw and freeze operations:
var m = mori; // ~220ms with V8 version 3.29.80 MBP 2.26ghzforvar j = 0; j < 10; j++ var s = ; var arr = ; forvar i = 0; i < 10000000; i++ arr; ; ; // ~70msforvar j = 0; j < 10; j++ s = ; var mv = m; forvar i = 0; i < 10000000; i++ mv = m_conj; var v = m; ; ;
ES6 Map/Set inspired interfaces
All Mori maps and sets support all the non-mutating methods of the
proposed ES6
Map
and
Set
interfaces. The main difference with the spec is that key lookup is
based on value not reference. keys
, values
, and entries
methods
return the proposed mutable iterators:
var m = mori;var h = m; h; // => trueh; // => 1 var iter = h;iternext; // => {done: false, value: "foo"}
This feature is subject to changes in the ES6 proposal.
Transducers
Mori includes Transducers. Zero allocation collection operations FTW:
var m = mori;var a = ; forvar i = 0; i < 1000000; i++ a; // make it immutablevar v = m; { var s = ; ; console;} // ~190ms V8 version 3.29.80 MBP 2.26ghz; // ~440ms;
Build
Prerequisites
You will first need to install the Java SDK, if it's not already installed on your system.
On Windows, you will need to manually install
Leiningen. On UNIX-like
systems, Leiningen will be installed within the project automatically
if the lein
executable is not found on your path or if your lein
version predates 2.0.0
.
Clone the repo
git clone https://github.com/swannodette/mori.gitcd mori
On a UNIX-like system build with
./scripts/build.sh
Alternatively using npm
npm run-script build
On Windows
./scripts/build.ps1
The build process will generate an optimized JavaScript file
mori.js
, which is suitable for use with Node.js, or in a Web browser
or other JavaScript environments. You can also load it as an AMD
module.
Copyright (C) 2012-2015 David Nolen and contributors
Distributed under the Eclipse Public License, the same as Clojure.