Fwd: Curried functions

[Bob Myers]

It's trivially simply to write a function `currify` which essentially does
what your proprosed `curry` keyword does.

```js
function currify(f) {
  return function _currify(flen, _f) {
    return (...args) => {
      var remaining = flen - args.length;
      return remaining <= 0 ?
        _f(...args) :
        _currify(remaining, (...args2) => _f(...args, ...args2));
    };
  }(f.length, f);
}


function add(a, b, c) { return a + b + c; }
var _add = currify(add);

console.log(_add(1)(2)(3));
console.log(_add(1, 2)(3));
console.log(_add(1)(2, 3));
console.log(_add(1, 2, 3));
```

--
Bob



On Fri, Oct 16, 2015 at 1:15 AM, Michael McGlothlin <
mike.mcglothlin at gmail.com> wrote:

> I dislike that syntax because it makes the order of operations mysterious.
> I like the idea of currying but it should always be clear what is going on.
> A couple parentheses would make things a lot more obvious.
>
> On Thu, Oct 15, 2015 at 8:02 AM, Mark S. Miller <erights at google.com>
> wrote:
>
>> const add = a => b => a + b;
>>
>>
>> On Thu, Oct 15, 2015 at 8:08 AM, Niloy Mondal <niloy.mondal84 at gmail.com>
>> wrote:
>>
>>> It would be really cool to have syntax to curry functions built into the
>>> languages. Something like...
>>>
>>> ```js
>>> curry function add(a, b) {
>>>     return a + b;
>>> }
>>>
>>> add(2)(3); // 5
>>>
>>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20151016/3c35dcce/attachment-0001.html>