> On Jul 26, 2016, at 8:30 AM, Nevin Brackett-Rozinsky
> <[email protected]> wrote:
>
> However, I believe that `first(n)` and `last(n)` read more clearly at the
> point of use than `prefix(n)` and `suffix(n)`.
I've seen this a couple of times. It's something I bring up in "Other
alternatives":
> * We considered using `first` and `last` as the basis for both
> single-element and multiple-element operations (such that `prefix(3)`
> would become `first(3)`, etc.), but:
>
> 1. These seemed like distinct functionalities, particularly since
> their types are different.
>
> 2. We're not comfortable with heavily overloading a property with a
> bunch of methods, and didn't want to make `first` and `last` into
> methods.
>
> 3. Most APIs work fine, but `hasFirst(_:)` is atrocious, and we see
> no better alternative which includes the word `first`.
To give you an idea of what I mean by #3:
if numbers.hasFirst([1, 2, 3, 4, 5]) && numbers.hasLast([5, 4, 3, 2,
1]) { … }
Keeping those issues in mind, do you still prefer `first(n)` over `prefix(n)`?
--
Brent Royal-Gordon
Architechies
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