[wip] add first function and tests to mirror last

[stoeffel]

No description provided.

[tjmehta]

last was created to avoid arr[arr.length-1], first doesn't seem as useful as it is always arr[0]

[stoeffel]

Yes, but it's useful for composing new functions.

var capitalize = converge(
  function(head, tail) { return head + tail; },
  [compose(
    function(str) { return str.toUpperCase(); },
    first
  ),
  tail]
);

capitalize('hello'); // => 'Hello'

refs #88

[tjmehta]

For compose, first is equivalent to pluck('[0]')

[stoeffel]

For compose, first is equivalent to pluck('[0]')

Yes, you are right. I still think it's much more expressive and since it's really common in FP it deserves to be it's own function. But if you think it's overkill feel free to close this PR.

[podviaznikov]

I would add first for compose. Seems more intuitive then pluck('[0]').

[tjmehta]

I do like 101 having mirrors to existing utils; however, maybe in this case it is just a lack of documentation? Do you all think that documentation would be sufficient here?

[tjmehta]

On a similar note, 101/last toStrings its argument if it is not a "list". This behavior is probably not useful (do you all agree?). I wouldn't mind creating a first as a convenience util that is as simple as pluck('[0]') but maybe we should simplify last. Thoughts?

[stoeffel]

👍 on simplifying last. And probably you are right first is out of scope for 101.

Do you all think that documentation would be sufficient here?

yop. I will make a pr as soon as I have time.

[tjmehta]

stale PR closing for now