The Lodash _.mapArgsWith() method takes a mapping function and returns a new combinator function which will take a target function and will return a new function that maps its arguments with the mapping function before executing the body of the target function.
Syntax:
_.mapArgsWith( mapping_function );
Parameters: This method accepts a single parameter as mentioned above and defined below:
- mapping_function: Mapping function to be accepted by the function.
Return Value: This method returns a function.
Note: To execute the below examples, you have to install the lodash-contrib library by using this command prompt and execute the following command.
npm install lodash-contrib
Below examples illustrate the Lodash _.mapArgsWith() method in JavaScript:
Example 1: we made a function that cubes the given value then adds that value to itself.
// Defining lodash contrib variable var _ = require( 'lodash-contrib' );
function add (x)
{ return x + x + x ; }
function sub (x)
{ return x - 2;
} var addnow = _.mapArgsWith(sub);
var subnow = addnow(add);
console.log(subnow(7)) |
Output:
15
Example 2:
// Defining lodash contrib variable var _ = require( 'lodash-contrib' );
function squ (x)
{ return x * x ; }
function add (x)
{ return x + 10;
} var addnow = _.mapArgsWith(add);
var sq = addnow(squ);
console.log(sq(5)) |
Output:
225
Example 3:
// Defining lodash contrib variable var _ = require( 'lodash-contrib' );
function cs (x)
{ return "GeeksforGeeks : Computer Science Portal for Geeks" ; }
function geek (x)
{ return "GeeksforGeeks" ;
} var gfg = _.mapArgsWith(geek);
var gfgFunc = gfg(cs);
console.log(gfgFunc()) |
Output:
GeeksforGeeks : Computer Science Portal for Geeks
Example 4:
// Defining lodash contrib variable var _ = require( 'lodash-contrib' );
function cs (x)
{ return x; }
function geek (x)
{ return x[0]+ " : " +x[1];
} var gfg = _.mapArgsWith(geek);
var gfgFunc = gfg(cs);
console.log(gfgFunc([ "GeeksforGeeks" ,
"Computer Science Portal for Geeks" ]))
|
Output:
GeeksforGeeks : Computer Science Portal for Geeks