📜  Lodash _.curry() 方法

📅  最后修改于: 2022-05-13 01:56:54.115000             🧑  作者: Mango

Lodash _.curry() 方法

Lodash _.curry()方法返回给定函数的柯里化版本。如果相反,参数将从右到左处理。

句法:

_.curry( fun, reverse )

参数:此方法采用上面列出并在下面讨论的两个参数。

  • fun:这是给定的函数。
  • reverse:它是一个可选参数,决定参数是否反转。

返回值:它返回函数的柯里化版本。

注意:要执行以下示例,您必须使用此命令提示符安装lodash-contrib库并执行以下命令。

npm install lodash-contrib

示例 1:

Javascript
// Defining lodash contrib variable
var _ = require('lodash-contrib'); 
  
// Function
function fun(a, b, c, d){
    return a + b + c + d;
}
  
// Making curried function
var gfgFunc = _.curry(fun);
  
// Only operates for arguments same
// as the number in function
console.log("Addition is :",
    gfgFunc(42)(23)(20)(30));
  
// Not adds for less arguments
console.log(gfgFunc(1)(2)(3));


Javascript
// Defining lodash contrib variable
var _ = require('lodash-contrib'); 
  
// Function
function fun(a, b, c){
    return a * b * c;
}
  
// Making curried function
var gfgFunc = _.curry(fun);
  
// Only operates for arguments same
// as the number in function
console.log("Multiplication is :",
    gfgFunc(20)(23)(27));
  
// Not multiplies for less arguments
console.log(gfgFunc(1)(2));


Javascript
// Defining lodash contrib variable
var _ = require('lodash-contrib'); 
  
// Function
function fun(a, b, c) {
    return arguments;
}
  
// Making curried function
var gfgFunc = _.curry(fun, false);
  
// Only operates for arguments same
// as the number in function
console.log("curried arguments are :",
    gfgFunc("arg1","arg2","arg3"));


输出:

Addition is : 115
[Function: wrapper]

示例 2:

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib'); 
  
// Function
function fun(a, b, c){
    return a * b * c;
}
  
// Making curried function
var gfgFunc = _.curry(fun);
  
// Only operates for arguments same
// as the number in function
console.log("Multiplication is :",
    gfgFunc(20)(23)(27));
  
// Not multiplies for less arguments
console.log(gfgFunc(1)(2));

输出:

Multiplication is : 12420
[Function: wrapper]

示例 3:从左到右处理 reversed = false 的参数。

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib'); 
  
// Function
function fun(a, b, c) {
    return arguments;
}
  
// Making curried function
var gfgFunc = _.curry(fun, false);
  
// Only operates for arguments same
// as the number in function
console.log("curried arguments are :",
    gfgFunc("arg1","arg2","arg3"));

输出:

curried arguments are : [Arguments] 
    { '0': 'arg1', '1': 'arg2', '2': 'arg3' }