andrewimm/gist:3006678

Created June 27, 2012 20:27

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Playing JS Golf with PubSub. 171 bytes gzipped

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function ps(d){c={};d.pub=function(a,b){for(var i=c[a].length;i;)c[a][--i].apply(this,b)};d.sub=function(a,b){c[a]?c[a].push(b):c[a]=[b]};d.unsub=function(a,b){c[a]=(c[a]||[]).filter(function(i){return i!==b})}}

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andrewimm commented Jun 27, 2012

ps() adds pub/sub/unsub methods to any object.
For instance: ps(window);
After this, window.sub(channel, function) sets function to be called whenever data is published to channel,
window.pub(channel, values) applies the array values of values as the arguments of each callback on channel,
and window.unsub(channel, function) removes function from the list of methods subscribed to channel.

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