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cyberstream/Array.prototype.insert

Created August 17, 2011 02:42
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Insert an item into an array at the given zero-based offset, positive or negative
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Array.prototype.insert
function(i,o){r=this;o=(o==-1?r.length:(o<-1?o+1:o));return r.slice(0,o).concat(i).concat(r.slice(o,r.length))}
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