D2: std.algorithm.find, but get part before what you were searching for
Jonathan M Davis
jmdavisProg at gmail.com
Thu Mar 4 00:55:40 PST 2010
Lars T. Kyllingstad wrote:
> Jonathan M Davis wrote:
>> std.algorithm.find() returns the rest of the range starting at what you
>> were searching for (or an empty range if it wasn't in the given range).
>> Is there a function in phobos which does a find but returns everything
>> _before_ what you're searching for?
>> I can't find one that will do that, and I don't see an obvious way of
>> combining functions to get it. Naturally, I'll roll my own function for
>> it if I have to, but if there's already a way to do it in phobos
>> semi-cleanly, I'd probably prefer to do that. So, I'm enquiring as to
>> whether anyone here knows of such a function or combination of functions.
>> - Jonathan M Davis
> Would std.algorithm.until() be what you're looking for?
Hmm. I'd thought that I'd looked at that one and determined that it didn't
do what I was looking for, but on another inspection of it, it does look
like until() will do the job. It has the potential downside that unlike
find, it cannot take multiple ranges to be found, but in my case (and
probably most cases), that's not an issue. Thanks. Maybe this is what I get
for coding late at night...
On a side note, it would be great if we could figure out a way to make the
docs more user-friendly - especially in std.algorithm. The functions are
great, and they're really versatile, but that seems to come at the cost of
incredibly nasty signatures. It can make it hard to find the function itself
among all of its parameters and its return type (especially the return
type). Right now, I'd expect it to scare a fair number of potential users
away. What the best solution would be, I don't know (perhaps making it so
that it lists information on the function without its signature and then
lists the signature at the end, or maybe we could find some way to give an
abstracted signature which gave the basic idea without all of the details),
but right now std.algorthm is definitely scary-looking. It's got great
stuff, but the docs could definitely use some improvement.
- Jonathan M Davis
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