result-memorizer

npm install --save result-memorizer

memorizer

memoizes the result of a func. If resolver is provided, it determines the cache key for storing the result based on the arguments provided to the memoized function. By default, the first argument provided to the memoized function is used as the map cache key.

API

memorizer(func: Function, resolver: Function, cache?: Map<any, any>, ctx?: any)

shellMemorizer(fundamental: Function, resolver: Function, cache: Map<any, any>, ctx: any)

@memorizerDecorator(resolver?: Function)

EXAMPLE

memorizer

import { memorizer } from 'memorizer';
function fibonacci(n) {
    if (n === 0 || n === 1) {
        return n;
    }
    return fibonacci(n - 1) + fibonacci(n - 2);
}
fibonacci = memorizer(fibonacci);
console.log(fibonacci(50));

shellMemorizer

import { shellMemorizer } from 'memorizer';
let map = new Map();
map.set(0, 0);
map.set(1, 1);
let fibonacci = shellMemorizer(function (recur, n) {
    return recur(n - 1) + recur(n - 2);
}, null, map);
console.log(fibonacci(50));

memorizerDecorator

import { memorizerDecorator } from 'memorizer';
class F {
    @memorizerDecorator()
    fibonacci(n) {
        if (n === 0 || n === 1) {
            return n;
        }
        return this.fibonacci(n - 1) + this.fibonacci(n - 2);
    }
}
let f = new F();
console.log(f.fibonacci(5));