1
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var apply = require('./_apply'),
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2
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arrayMap = require('./_arrayMap'),
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3
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baseFlatten = require('./_baseFlatten'),
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4
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baseIteratee = require('./_baseIteratee'),
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5
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baseRest = require('./_baseRest'),
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6
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baseUnary = require('./_baseUnary'),
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7
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castRest = require('./_castRest'),
|
8
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isArray = require('./isArray');
|
9
|
|
10
|
/* Built-in method references for those with the same name as other `lodash` methods. */
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11
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var nativeMin = Math.min;
|
12
|
|
13
|
/**
|
14
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* Creates a function that invokes `func` with its arguments transformed.
|
15
|
*
|
16
|
* @static
|
17
|
* @since 4.0.0
|
18
|
* @memberOf _
|
19
|
* @category Function
|
20
|
* @param {Function} func The function to wrap.
|
21
|
* @param {...(Function|Function[])} [transforms=[_.identity]]
|
22
|
* The argument transforms.
|
23
|
* @returns {Function} Returns the new function.
|
24
|
* @example
|
25
|
*
|
26
|
* function doubled(n) {
|
27
|
* return n * 2;
|
28
|
* }
|
29
|
*
|
30
|
* function square(n) {
|
31
|
* return n * n;
|
32
|
* }
|
33
|
*
|
34
|
* var func = _.overArgs(function(x, y) {
|
35
|
* return [x, y];
|
36
|
* }, [square, doubled]);
|
37
|
*
|
38
|
* func(9, 3);
|
39
|
* // => [81, 6]
|
40
|
*
|
41
|
* func(10, 5);
|
42
|
* // => [100, 10]
|
43
|
*/
|
44
|
var overArgs = castRest(function(func, transforms) {
|
45
|
transforms = (transforms.length == 1 && isArray(transforms[0]))
|
46
|
? arrayMap(transforms[0], baseUnary(baseIteratee))
|
47
|
: arrayMap(baseFlatten(transforms, 1), baseUnary(baseIteratee));
|
48
|
|
49
|
var funcsLength = transforms.length;
|
50
|
return baseRest(function(args) {
|
51
|
var index = -1,
|
52
|
length = nativeMin(args.length, funcsLength);
|
53
|
|
54
|
while (++index < length) {
|
55
|
args[index] = transforms[index].call(this, args[index]);
|
56
|
}
|
57
|
return apply(func, this, args);
|
58
|
});
|
59
|
});
|
60
|
|
61
|
module.exports = overArgs;
|