From: es-discuss [mailto:[email protected]] On Behalf Of Mark
Everitt
> There seems to be no clean way to tell apart regular functions and arrow
> functions (the only way I can do this is by looking at the result of
> toString). That being the case, arrow functions mean that we can no longer
> trust call, apply and bind, since we cannot easily tell if the function we
> want to bind is an arrow function and will silently ignore us.
There have been multitudes of threads on this before, but the short recap is
that arrow functions are functions, not methods. That is, they do not change
their behavior depending on what `thisArg` they are called with. Other examples
of non-method functions include:
```js
function f(x) {
return x * 2;
}
var g = (function () { return this.foo; }).bind({ foo: 5 });
function F(x) {
var hidden = x * 2;
this.f = function () {
return hidden;
};
}
var h = (new F(12)).f;
```
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