Function: reduce()

function reduce<T, R>(
   collection, 
   iteratee, 
   initialValue): R;

Reduces an array or object into a single accumulated value. 将数组或对象归约为单个累计值。

Type Parameters

Type Parameter	Description
T extends Record<string, unknown> | readonly unknown[]	The source collection type / 源集合类型
R	The accumulator type / 累加器类型

Parameters

Parameter	Type	Description
collection	T	The source collection / 源集合
iteratee	(accumulator, value, key, collection) => R	The reducer function / 归约函数
initialValue	R	The initial accumulator / 初始累加值

Returns

R

The reduced result / 归约结果

Example

reduce({ a: 1, b: 2 }, (acc, value) => acc + value, 0)
// => 3

Since

1.2.0