Array.prototype.every = function(functorTruthTest){
return this.reduce(function(acc, elem, index, arr){
return acc && functorTruthTest(elem, index, arr);
}, true);
}
A quick polyfill to include Array.prototype.every to browsers that don't support it
requirements: must support Array.prototype.reduce
#2: added thisArg support and test if already supported
requirements: must support Array.prototype.reduce
#2: added thisArg support and test if already supported
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