[Issue 19544] Can't call inputRangeObject on ranges not supported by moveFront
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Tue Oct 5 09:33:03 UTC 2021
https://issues.dlang.org/show_bug.cgi?id=19544
Dlang Bot <dlang-bot at dlang.rocks> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Dlang Bot <dlang-bot at dlang.rocks> ---
dlang/phobos pull request #8256 "Fix issue 19544 - Can't call inputRangeObject
on ranges not supported by …" was merged into master:
- d15e19fc44978424f57f05413d48666df635411d by Paul Backus:
Fix issue 19544 - Can't call inputRangeObject on ranges not supported by
moveFront
The range algorithms moveFront, moveBack, and moveAt do not accept all
valid input ranges, bidirectional ranges, and random-access ranges,
respectively. Their inclusion as methods of the InputRange,
BidirectionalRange, and RandomAccessFinite interfaces previously caused
InputRangeObject, which implements those interfaces, to fail to compile
when instantiated with certain valid input, bidirectional, and
random-access ranges.
These methods should not have been included in their respective
interfaces to begin with, but removing them now would break existing
code. Instead, as a workaround, InputRangeObject now implements these
methods by throwing an exception if the wrapped range does not support
them.
https://github.com/dlang/phobos/pull/8256
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