The Underscore.js _.fix() method fixes the arguments to a function based on the parameter template defined by the presence of values and the _ placeholder.
The function takes a parameter that is replaced by _ in given values.
Syntax:
_.fix( fun, [values] )
Parameters: This method takes a single parameter as listed above and discussed below.
- fun: This parameter holds the given function.
- values: The values passed to the fun.
Return Value: It returns a new function.
Note: To execute the below examples, you have to install the underscore-contrib library by using this command prompt and execute the following command.
npm install underscore-contrib
Example 1:
Javascript
// Defining underscore contrib variable var _ = require('underscore-contrib'); // Function function mul(a, b, c, d){ return a*b*c*d; } // Making curried function var gfgFunc = _.fix(mul, 1,2,_,4); // 3 is replaced by _ in given values console.log("Multiplication is :",gfgFunc(3)); |
Output:
Multiplication is : 24
Example 2:
Javascript
// Defining Underscore contrib variable var _ = require('underscore-contrib'); // Function function add(a, b, c){ return a+b+c; } // Making fixed function var gfgFunc = _.fix(add, 1, 2, _); console.log("Addition is :",gfgFunc(3)); |
Output:
Addition is : 6
Example 3:
Javascript
// Defining Underscore contrib variable var _ = require('underscore-contrib'); // Function function fun(str){ return str; } // Making fixed function var gfgFunc = _.fix(fun, _); console.log("Coding Platform :", gfgFunc("neveropen")); |
Output:
Coding Platform : neveropen
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