Lodash _.quaternary() 方法
Lodash _.quaternary() r 返回一个只接受四个参数的新函数,并将这些参数传递给给定的函数。其他参数被丢弃。
句法:
_.quaternary( fun )
参数:此方法采用上面列出并在下面讨论的单个参数。
- fun:这是给定的函数。
返回值:此方法返回一个新函数。
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(){
return arguments;
}
// Making quaternary function
var gfgFunc = _.quaternary(fun);
console.log("Arguments are :", gfgFunc(
"first", "second", "third", "fourth"));
Javascript
// Defining lodash contrib variable
var _ = require('lodash-contrib');
// Function
function fun(){
return arguments;
}
// Making quaternary function
var gfgFunc = _.quaternary(fun);
// Rest arguments are excluded
console.log("Arguments are :", gfgFunc(
"a", "b", "c", "d", "e", "f"));
Javascript
// Defining lodash contrib variable
var _ = require('lodash-contrib');
// Function
function add(){
s = 0
for(i = 0; i < 4; i++){
s += arguments[i]
}
return s;
}
// Making quaternary function
var gfgFunc = _.quaternary(add);
// Rest arguments are excluded
console.log("Sum of first 4 arguments is :",
gfgFunc(100, 100, 100, 100, 100));
输出:
Arguments are : [Arguments] {
'0': 'first',
'1': 'second',
'2': 'third',
'3': 'fourth'
}
示例 2:
Javascript
// Defining lodash contrib variable
var _ = require('lodash-contrib');
// Function
function fun(){
return arguments;
}
// Making quaternary function
var gfgFunc = _.quaternary(fun);
// Rest arguments are excluded
console.log("Arguments are :", gfgFunc(
"a", "b", "c", "d", "e", "f"));
输出:
Arguments are : [Arguments]
{ '0': 'a', '1': 'b', '2': 'c', '3': 'd' }
示例 3:在此示例中,我们将添加参数,但只有前 4 个参数将使用此方法。
Javascript
// Defining lodash contrib variable
var _ = require('lodash-contrib');
// Function
function add(){
s = 0
for(i = 0; i < 4; i++){
s += arguments[i]
}
return s;
}
// Making quaternary function
var gfgFunc = _.quaternary(add);
// Rest arguments are excluded
console.log("Sum of first 4 arguments is :",
gfgFunc(100, 100, 100, 100, 100));
输出:
Sum of first 4 arguments is : 400