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@naveen-ithappu
Last active February 29, 2024 08:50
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Converts Array of Objects to HashMap
function isFunction(func){
return Object.prototype.toString.call(func) === '[object Function]';
}
/**
* This function converts an array to hash map
* @param {String | function} key describes the key to be evaluated in each object to use as key for hasmap
* @returns Object
* @Example
* [{id:123, name:'naveen'}, {id:345, name:"kumar"}].toHashMap("id")
Returns :- Object {123: Object, 345: Object}
[{id:123, name:'naveen'}, {id:345, name:"kumar"}].toHashMap(function(obj){return obj.id+1})
Returns :- Object {124: Object, 346: Object}
*/
Array.prototype.toHashMap = function(key){
var _hashMap = {}, getKey = isFunction(key)?key: function(_obj){return _obj[key];};
this.forEach(function (obj){
_hashMap[getKey(obj)] = obj;
});
return _hashMap;
};
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