memoize

• memoize

这是一个记忆化函数，用于缓存函数的返回值。当使用相同的参数再次调用时，它会返回缓存的结果，避免重复计算。

默认使用 JSON.stringify(arguments) 作为缓存的 key。

Added in v0.0.1

Usage

import { memoize } from 'parsnip-kit'

function expensiveCalculation(a: number, b: number): number {
  // Simulate an expensive computation process
  console.log('Calculating...')
  return a + b
}

const memoizedCalc = memoize(expensiveCalculation)
memoizedCalc(2, 3) // Calculating...，returns 5
memoizedCalc(2, 3) // directly return 5, do not call expensiveCalculation

// Use a custom resolver
const memoizedCalcWithResolver = memoize(
  expensiveCalculation,
  (a, b) => a + b
)
memoizedCalcWithResolver(2, 3) // Calculating...，returns 5
memoizedCalcWithResolver(4, 1) // directly return 5, do not call expensiveCalculation

const memoizedCalcWithAllArgs = memoize(
  expensiveCalculation,
  (a, b) => a + b,
  [2, 3]
)
// Calculating..., call expensiveCalculation to cache
memoizedCalcWithAllArgs(2, 3)
// directly return 5, do not call expensiveCalculation

API

Type Parameter

Arg	Type	Description
T	extends (...args: any[]) => any	要记忆化的函数类型

Arguments

Arg	Type	Optional	Default	Description
func	T	false	undefined	要记忆化的函数
resolver	( ...args: Parameters<T> ) => any	true	undefined	用于生成缓存键的函数
initCache	Parameters<T>	true	undefined	初始化缓存时的参数

Returns

Type
( ...args: Parameters<T> ) => ReturnType<T>