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MapUtils.js
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MapUtils.js
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/**
* MapUtils contains some convenience functions related to Maps.
* @type {{iterateOverMap: Function, exists: Function, put: Function, isEmpty: Function}}
*/
(function (root, factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(factory);
} else {
// Browser globals
if (typeof root.regulaModules === "undefined") {
root.regulaModules = {};
}
root.regulaModules.MapUtils = factory();
}
}(this, function () {
return {
iterateOverMap: function (map, callback) {
var index = 0;
for (var property in map) if (map.hasOwnProperty(property) && property !== "__size__") {
//the callback receives as arguments key, value, index. this is set to
//the map that you are iterating over
callback.call(map, property, map[property], index);
index++;
}
},
exists: function (array, value) {
var found = false;
var i = 0;
while (!found && i < array.length) {
found = value == array[i];
i++;
}
return found;
},
put: function (map, key, value) {
if (!map.__size__) {
map.__size__ = 0;
}
if (!map[key]) {
map.__size__++;
}
map[key] = value;
},
isEmpty: function (map) {
for (var key in map) if (map.hasOwnProperty(key)) {
return false;
}
return true;
}
};
}));