curry

_.curry(func, [arity=func.length])

创建一个接受 func 参数的函数，如果至少提供了 arity 个参数，则调用 func 返回其结果，或者返回一个接受其余 func 个参数的函数，依此类推。如果 func.length 不够，可以指定 func 的参数。

¥Creates a function that accepts arguments of func and either invokes func returning its result, if at least arity number of arguments have been provided, or returns a function that accepts the remaining func arguments, and so on. The arity of func may be specified if func.length is not sufficient.

_.curry.placeholder 值在单片构建中​​默认为 _，可用作提供的参数的占位符。

¥The _.curry.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for provided arguments.

注意：此方法不设置柯里化函数的 "length" 属性。

¥Note: This method doesn't set the "length" property of curried functions.

新增于

¥Since

2.0.0

参数

¥Arguments

1. func (函数)：要柯里化的函数。

   ¥func (Function): The function to curry.

2. [arity=func.length] (数值)：func 的元数。

   ¥[arity=func.length] (number): The arity of func.

返回

¥Returns

(函数)：返回新的柯里化函数。

¥(Function): Returns the new curried function.

示例

¥Example

var abc = function(a, b, c) {
  return [a, b, c];
};

var curried = _.curry(abc);

curried(1)(2)(3);
// => [1, 2, 3]

curried(1, 2)(3);
// => [1, 2, 3]

curried(1, 2, 3);
// => [1, 2, 3]

// Curried with placeholders.
curried(1)(_, 3)(2);
// => [1, 2, 3]