The Lodash _.binary() method returns a new function that accepts only two arguments and passes these arguments to the given function. Additional arguments are discarded.
Syntax:
_.binary( fun )
Parameters: This method takes a single parameter as listed above and discussed below.
- fun: This is the given function.
Return Value: It returns a new 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
Example 1:
Javascript
// Defining lodash contrib variable var _ = require( 'lodash-contrib' ); // Function function fun(){ var mul = 1; for ( var i = 0; i < arguments.length; i++) { mul = mul * arguments[i]; } return mul; } var gfgFunc = _.binary(fun); console.log( "Multiplication is :" , gfgFunc(2,23)); |
Output:
Multiplication is : 46
Example 2:
Javascript
// Defining lodash contrib variable var _ = require( 'lodash-contrib' ); // Function function fun(){ var mul = 1; for ( var i = 0; i < arguments.length; i++) { mul = mul * arguments[i]; } return mul; } var gfgFunc = _.binary(fun); // Only operates for first two parameters console.log( "Multiplication is :" , gfgFunc(2,23,10)); |
Output:
Multiplication is : 46
Example 3:
Javascript
// Defining lodash contrib variable var _ = require( 'lodash-contrib' ); // Function function fun(){ return arguments; } var gfgFunc = _.binary(fun); // Only operates for first two parameters console.log( "Arguments are :" , gfgFunc( 'arg1' , 'arg2' , 'arg3' , 'arg4' )); |
Output: Extra arguments are discarded.
Arguments are : [Arguments] { '0': 'arg1', '1': 'arg2' }