Projekt

Obecné

Profil

Stáhnout (1.53 KB) Statistiky
| Větev: | Revize:
1 3a515b92 cagy
var baseRest = require('./_baseRest'),
2
    createWrap = require('./_createWrap'),
3
    getHolder = require('./_getHolder'),
4
    replaceHolders = require('./_replaceHolders');
5
6
/** Used to compose bitmasks for function metadata. */
7
var WRAP_PARTIAL_FLAG = 32;
8
9
/**
10
 * Creates a function that invokes `func` with `partials` prepended to the
11
 * arguments it receives. This method is like `_.bind` except it does **not**
12
 * alter the `this` binding.
13
 *
14
 * The `_.partial.placeholder` value, which defaults to `_` in monolithic
15
 * builds, may be used as a placeholder for partially applied arguments.
16
 *
17
 * **Note:** This method doesn't set the "length" property of partially
18
 * applied functions.
19
 *
20
 * @static
21
 * @memberOf _
22
 * @since 0.2.0
23
 * @category Function
24
 * @param {Function} func The function to partially apply arguments to.
25
 * @param {...*} [partials] The arguments to be partially applied.
26
 * @returns {Function} Returns the new partially applied function.
27
 * @example
28
 *
29
 * function greet(greeting, name) {
30
 *   return greeting + ' ' + name;
31
 * }
32
 *
33
 * var sayHelloTo = _.partial(greet, 'hello');
34
 * sayHelloTo('fred');
35
 * // => 'hello fred'
36
 *
37
 * // Partially applied with placeholders.
38
 * var greetFred = _.partial(greet, _, 'fred');
39
 * greetFred('hi');
40
 * // => 'hi fred'
41
 */
42
var partial = baseRest(function(func, partials) {
43
  var holders = replaceHolders(partials, getHolder(partial));
44
  return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
45
});
46
47
// Assign default placeholders.
48
partial.placeholder = {};
49
50
module.exports = partial;