https://github.com/theleoborges/lazy-stream

Stream library for Node.js with lazy evaluation
https://github.com/theleoborges/lazy-stream

Last synced: 10 months ago
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Stream library for Node.js with lazy evaluation

• Host: GitHub
• URL: https://github.com/theleoborges/lazy-stream
• Owner: theleoborges
• Created: 2012-08-16T22:12:20.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2012-08-16T22:14:35.000Z (over 13 years ago)
• Last Synced: 2025-01-29T06:49:23.648Z (12 months ago)
• Language: CoffeeScript
• Size: 387 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.markdown

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README

          
# lazy-stream

A library for lazy evaluation in Node.js, with support for infinite sequences.

## Creating a stream

    stream = require 'stream'

    stream.range 9                        # naturals from 9 to infinity

    stream.cycle [1, 2, 3]                # repeats 1, 2, 3 forever

    stream.create (-> 2), ((i) -> i*2)    # all powers of 2

## Stream operations

    myStream.filter (i) -> i%2 == 0       # a new stream with even numbers only

    myStream.map (i) -> i*2               # doubles every number in the stream

    myStream.take 5                       # get the first 5 elements (javascript array)

    stream.zip s1, s2, s3                 # creates a new steam pairing all streams 1 to 1

## Try the sample code

    # in the project folder

    

    >  npm install

    >  npm install -g mocha

    >  mocha

    

    # all the tests should pass

    

    > coffee src/main.coffee

    # lots of prime numbers!

## See the unit tests for more examples...