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Contents
var baseFlatten = require('../internal/baseFlatten'),
createWrapper = require('../internal/createWrapper'),
restParam = require('./restParam');
/** Used to compose bitmasks for wrapper metadata. */
var REARG_FLAG = 256;
/**
* Creates a function that invokes `func` with arguments arranged according
* to the specified indexes where the argument value at the first index is
* provided as the first argument, the argument value at the second index is
* provided as the second argument, and so on.
*
* @static
* @memberOf _
* @category Function
* @param {Function} func The function to rearrange arguments for.
* @param {...(number|number[])} indexes The arranged argument indexes,
* specified as individual indexes or arrays of indexes.
* @returns {Function} Returns the new function.
* @example
*
* var rearged = _.rearg(function(a, b, c) {
* return [a, b, c];
* }, 2, 0, 1);
*
* rearged('b', 'c', 'a')
* // => ['a', 'b', 'c']
*
* var map = _.rearg(_.map, [1, 0]);
* map(function(n) {
* return n * 3;
* }, [1, 2, 3]);
* // => [3, 6, 9]
*/
var rearg = restParam(function(func, indexes) {
return createWrapper(func, REARG_FLAG, undefined, undefined, undefined, baseFlatten(indexes));
});
module.exports = rearg;
Version data entries
153 entries across 80 versions & 8 rubygems