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tobie/gist:44308

Created January 7, 2009 15:56
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gistfile1.js
Object.extend = Object.extend.wrap(function(proceed, destination, source, safe) {
if (!safe) return proceed(destination, source);
for (var property in source) {
if (!(property in destination))
destination[property] = source[property];
}
return destination;
});
Object.extend({foo: 123}, {foo: 456}, true).foo
// -> 123
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