Underscore.js _.unsplat() Method
The _.unsplat() method takes a function expecting an array as its last argument and returns a function which works identically, but takes a list of trailing arguments instead of an array.
Syntax:
_.unsplat( function );
Parameters:
- function: Original function taking its last arguments as an array.
Return Value: This method returns a function.
Note: This will not work in normal JavaScript because it requires the underscore.js contrib library to be installed.
Underscore.js contrib library can be installed using npm install underscore-contrib –save.
Example 1:
Javascript
// Defining underscore contrib variable var _ = require( 'underscore-contrib' ); function g (val, arr) { return val + " : " + arr; } var gfgFunc = _.unsplat(g); console.log(gfgFunc( "a" , 1, 2, 3, 4)) |
Output:
a : 1, 2, 3, 4
Example 2:
Javascript
// Defining underscore contrib variable var _ = require( 'underscore-contrib' ); function g (arr) { return arr; } var gfgFunc = _.unsplat(g); console.log(gfgFunc(1, 2, 3, 4)) |
Output:
[ 1, 2, 3, 4 ]
Example 3:
Javascript
// Defining underscore contrib variable var _ = require( 'underscore-contrib' ); function g (val, arr) { return arr.join(val); } var gfgFunc = _.unsplat(g); console.log(gfgFunc( " : " , "w3wiki" , "Computer Science Portal for Beginner" )) |
Output:
w3wiki : Computer Science Portal for Beginner
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