December 21, 2014 [Issue 13885] aa.byKey and aa.byValue don't have a length | ||||
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https://issues.dlang.org/show_bug.cgi?id=13885 safety0ff.bugz <safety0ff.bugz@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |safety0ff.bugz@gmail.com --- Comment #1 from safety0ff.bugz <safety0ff.bugz@gmail.com> --- Implementing this would mean adding a field to byValue / byKey Result range struct which subtracts 1 from the field on each popFront. I'm not convinced there's enough motivation for this feature. // example of an alternative import std.range; auto knownLength(Range) (auto ref Range rng, size_t len) if (isInputRange!Range) { static struct Result { Range r; size_t length; alias r this; auto popFront()() { --length; r.popFront(); } @property bool empty()() { assert(!length == r.empty); return !length; } } return Result(rng, len); } void main() { int[int] aa; auto bykey = aa.byKey.knownLength(aa.length); auto byval = aa.byValue.knownLength(aa.length); } -- |
December 25, 2014 [Issue 13885] aa.byKey and aa.byValue don't have a length | ||||
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https://issues.dlang.org/show_bug.cgi?id=13885 bearophile_hugs@eml.cc changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |INVALID --- Comment #2 from bearophile_hugs@eml.cc --- (In reply to safety0ff.bugz from comment #1) > I'm not convinced there's enough motivation for this feature. I agree, I close down this ER. -- |
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