add book.js

node_modules/lodash/collection/some.js

@@ -0,0 +1,67 @@
+var arraySome = require('../internal/arraySome'),
+    baseCallback = require('../internal/baseCallback'),
+    baseSome = require('../internal/baseSome'),
+    isArray = require('../lang/isArray'),
+    isIterateeCall = require('../internal/isIterateeCall');
+
+/**
+ * Checks if `predicate` returns truthy for **any** element of `collection`.
+ * The function returns as soon as it finds a passing value and does not iterate
+ * over the entire 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 a value is also provided for `thisArg` the created `_.matchesProperty`
+ * style callback returns `true` for elements that have a matching property
+ * value, else `false`.
+ *
+ * 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 any
+ * @category Collection
+ * @param {Array|Object|string} collection The collection to iterate over.
+ * @param {Function|Object|string} [predicate=_.identity] The function invoked
+ *  per iteration.
+ * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @returns {boolean} Returns `true` if any element passes the predicate check,
+ *  else `false`.
+ * @example
+ *
+ * _.some([null, 0, 'yes', false], Boolean);
+ * // => true
+ *
+ * var users = [
+ *   { 'user': 'barney', 'active': true },
+ *   { 'user': 'fred',   'active': false }
+ * ];
+ *
+ * // using the `_.matches` callback shorthand
+ * _.some(users, { 'user': 'barney', 'active': false });
+ * // => false
+ *
+ * // using the `_.matchesProperty` callback shorthand
+ * _.some(users, 'active', false);
+ * // => true
+ *
+ * // using the `_.property` callback shorthand
+ * _.some(users, 'active');
+ * // => true
+ */
+function some(collection, predicate, thisArg) {
+  var func = isArray(collection) ? arraySome : baseSome;
+  if (thisArg && isIterateeCall(collection, predicate, thisArg)) {
+    predicate = undefined;
+  }
+  if (typeof predicate != 'function' || thisArg !== undefined) {
+    predicate = baseCallback(predicate, thisArg, 3);
+  }
+  return func(collection, predicate);
+}
+
+module.exports = some;