8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
20 lines
517 B
Markdown
20 lines
517 B
Markdown
### rearg
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Creates a function that invokes the provided function with its arguments arranged according to the specified indexes.
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Use `Array.prototype.map()` to reorder arguments based on `indexes` in combination with the spread operator (`...`) to pass the transformed arguments to `fn`.
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```js
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const rearg = (fn, indexes) => (...args) => fn(...indexes.map(i => args[i]));
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```
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```js
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var rearged = rearg(
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function(a, b, c) {
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return [a, b, c];
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},
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[2, 0, 1]
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);
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rearged('b', 'c', 'a'); // ['a', 'b', 'c']
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```
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