Apply, call, bind, декоратор

Call:

1
func.call(context, arg1, arg2, ...)

Apply:

1
func.apply(context, [arg1, arg2, ...])

Bind:

1
2
3
let fn = func.bind(context, arg1, arg2, ...)  fn()

Декоратор:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
let fn = (x) => {  return x}  const decorator = (fn) => {  const cache = new Map()    return (x) => {    if(map.has(x)){      return map.get(x)    }      const res = fn(x)    map.set(x, res)    return res  }}  fn = decorator(fn)