How to use ranges?
Doolan via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Sun Aug 23 03:17:56 PDT 2015
I keep running into areas of my code where it looks like I'd
benefit from using ranges, and then I try to do some range stuff
and my compiler tells me I'm using the wrong types, or there's
this problem, or that problem... so I'm scared off and I just
figure ways to work around using ranges.
I've tried reading the documentation, but for a language priding
itself on being readable and nice to look at, it really should
have less complicated docs:
auto tee(Flag!"pipeOnPop" pipeOnPop = Yes.pipeOnPop, R1, R2)(R1
inputRange, R2 outputRange) if (isInputRange!R1 &&
isOutputRange!(R2, ElementType!R1));
auto tee(alias fun, Flag!"pipeOnPop" pipeOnPop = Yes.pipeOnPop,
R1)(R1 inputRange) if (is(typeof(fun) == void) ||
isSomeFunction!fun);
(That's fine as secondary information, but this is the heading
for this function...)
And the use of auto everywhere makes it really hard to tell what
types I should be using for anything. My compiler talks about
RangeT!(whatever) but you try to use RangeT!(whatever) and you
find out RangeT is private...
I don't mean to complain so hard, I obviously like D enough to
want to use it, just the current amount/layout of documentation
can be frustrating at times.
Can someone give me a short summary of how to use ranges? And how
do they relate to slices? That line is really blurry...
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