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every.js
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define(['../internal/arrayEvery', '../internal/baseCallback', '../internal/baseEvery', '../lang/isArray'], function(arrayEvery, baseCallback, baseEvery, isArray) {
/**
* Checks if `predicate` returns truthy for **all** elements of `collection`.
* The predicate is bound to `thisArg` and invoked with three arguments;
* (value, index|key, collection).
*
* If a property name is provided for `predicate` the created "_.property"
* style callback returns the property value of the given element.
*
* If an object is provided for `predicate` the created "_.matches" style
* callback returns `true` for elements that have the properties of the given
* object, else `false`.
*
* @static
* @memberOf _
* @alias all
* @category Collection
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function|Object|string} [predicate=_.identity] The function invoked
* per iteration. If a property name or object is provided it is used to
* create a "_.property" or "_.matches" style callback respectively.
* @param {*} [thisArg] The `this` binding of `predicate`.
* @returns {boolean} Returns `true` if all elements pass the predicate check,
* else `false`.
* @example
*
* _.every([true, 1, null, 'yes']);
* // => false
*
* var users = [
* { 'user': 'barney', 'age': 36 },
* { 'user': 'fred', 'age': 40 }
* ];
*
* // using the "_.property" callback shorthand
* _.every(users, 'age');
* // => true
*
* // using the "_.matches" callback shorthand
* _.every(users, { 'age': 36 });
* // => false
*/
function every(collection, predicate, thisArg) {
var func = isArray(collection) ? arrayEvery : baseEvery;
if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
predicate = baseCallback(predicate, thisArg, 3);
}
return func(collection, predicate);
}
return every;
});