So... add maxCount and maxPos?
Ivan Kazmenko via Digitalmars-d
digitalmars-d at puremagic.com
Wed Jan 20 13:22:23 PST 2016
On Wednesday, 20 January 2016 at 17:16:00 UTC, Andrei
Alexandrescu wrote:
> This is one of those cases in which we were pedantically right
> to not add them, but their equivalents look like crap.
>
> https://github.com/D-Programming-Language/phobos/pull/3942
As it seems related, let me share my personal experience with
minPos.
Most of the time, I want one of the two things related to an
extremum.
1. The minimum or maximum element itself. I write it as
a.minPos.front. That's almost fine, but maybe there is a more
expressive way?
2. The index of minimum or maximum element, mostly using plain
array as a range. I write "a.length - a.minPos.length", and it
looks completely unintuitive. Additionally, when compiling to 64
bits, I usually still want an int to use with other ints around
(longs are overkill most of the time), and the cast adds more
clobber. Again, is there a better way to express that?
3. Other uses: I've yet to see the need.
In a random collection of my D code, the number of occurrences of
cases 1:2:3 is 6:4:0.
I've got used to "minPos !(q{a > b})" instead of "maxPos", but a
maxPos alias would of course make things a bit more clear. Don't
know how much of a justification that is.
Ivan Kazmenko.
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