Created
November 30, 2011 19:26
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Array extras applied to Objects
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(function (Object) { | |
// (C) WebReflection - Mit Style License | |
// @wtf? Array extras applied to Objects | |
function OPmap(key, i, arr) { | |
this.n[key] = invoke(this, key); | |
} | |
function OPfilter(key, i, arr) { | |
invoke(this, key) && (this.n[key] = this.s[key]); | |
} | |
function define(key, callback) { | |
defineProperty(OP, key, {value: callback}); | |
} | |
function generic(key, i, arr) { | |
return invoke(this, key); | |
} | |
function invoke(self, key) { | |
return self.f.call(self.c, self.s[key], key, self.s); | |
} | |
function iterator(self, callback, context, freshlyBaked) { | |
return {s: self, f: callback, c: context, n: freshlyBaked}; | |
} | |
var | |
EVERY = "every", | |
FOR_EACH = "forEach", | |
MAP = "map", | |
SOME = "some", | |
OP = Object.prototype, | |
defineProperty = Object.defineProperty, | |
keys = Object.keys | |
; | |
if (FOR_EACH in OP) return; | |
define(EVERY, function every(callback, context) { | |
return keys(this)[EVERY]( | |
generic, | |
iterator(this, callback, context) | |
); | |
}); | |
define("filter", function filter(callback, context) { | |
keys(this)[FOR_EACH]( | |
OPfilter, | |
iterator(this, callback, context, context = {}) | |
); | |
return context; | |
}); | |
define(FOR_EACH, function forEach(callback, context) { | |
keys(this)[FOR_EACH]( | |
generic, | |
iterator(this, callback, context) | |
); | |
}); | |
define(MAP, function map(callback, context) { | |
keys(this)[MAP]( | |
OPmap, | |
iterator(this, callback, context, context = {}) | |
); | |
return context; | |
}); | |
define(SOME, function some(callback, context) { | |
return keys(this)[SOME]( | |
generic, | |
iterator(this, callback, context) | |
); | |
}); | |
}(Object)); |
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