Navel Pondering Mantra

    This package has been deprecated

    Author message:

    For now, this project is deprecated. I no longer use or work on it, and doubt others are using it. If by any chance you were using this, and would like to see more of it in some form, let me know: justnvdm@gmail.com

    multifn

    0.1.1 • Public • Published

    multifn

    create functions with multiple overrides.

    var multifn = require('multifn');
     
    var fn = multifn()
      .if(function(a, b) { return a && b; })
      .do(function(a, b) { return a + b; })
     
      .if(function(a, b) { return a && !b; })
      .do(function(a) { return this(a, 1); })
     
      .else(function() { return 1; });
     
    fn();  // 1
    fn(3);  // 4
    fn(2, 3);  // 5

    install

    node:

    $ npm install multifn
    

    browser:

    $ bower install multifn
    
    <script src="/bower_components/multifn/multifn.js"></script>

    api

    multifn()

    Creates a new multifn. When the multifn is invoked, its if functions will be invoked in the order they were specified, short circuiting when a matching if function is found and returning the result of the corresponding do function.

    var fn = multifn()
      .if(function(a, b) { return a && !b; })
      .do(function(a) { return a; })
     
      .if(function(a, b) { return a && b; })
      .do(function(a, b) { return a + b; });
     
    fn(3);  // 3
    fn(2, 3);  // 5

    multifn().if(ifFn).do(doFn)

    Defines a new override for the multifn. When ifFn returns true, doFn will be invoked, its result used as the multifn's invokation result. Both ifFn and doFn will be invoked with the arguments that the multifn was invoked with, and will both have the multifn as their this context.

    var fn = multifn()
      .if(function(a, b) { return a && b; })
      .do(function(a) { return a + b; })
     
    fn(2, 3);  // 5

    multifn().else(elseFn)

    Defines a new fallback function to use when none of the overrides match. Defaults to a 'noop': function() {}.

    var fn = multifn()
      .if(function(a, b) { return a && b; })
      .do(function(a) { return a + b; })
      .else(function() { return 1; });
     
    fn();  // 1

    Install

    npm i multifn

    DownloadsWeekly Downloads

    0

    Version

    0.1.1

    License

    MIT

    Last publish

    Collaborators

    • justinvdm