[Issue 2984] Failure to find front/back/popBack/popFront/etc should fall back to opApply

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=2984

Andrei Alexandrescu and...@erdani.com changed:

   What|Removed |Added

Version|2.029   |D2

--

[Issue 2984] Failure to find front/back/popBack/popFront/etc should fall back to opApply

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=2984


Don clugd...@yahoo.com.au changed:

   What|Removed |Added

 CC||clugd...@yahoo.com.au
   Severity|regression  |major


--- Comment #3 from Don clugd...@yahoo.com.au 2009-11-16 07:34:06 PST ---
This isn't a regression -- the language changed. Bug 3514 expresses this
better.

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[Issue 2984] Failure to find front/back/popBack/popFront/etc should fall back to opApply

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--- Comment #4 from Koroskin Denis 2kor...@gmail.com 2009-11-16 07:47:14 PST 
---
Well, yes. It is a regression in a sense that the code used to compile but it
doesn't anymore. It sees a front(), back() and empty() methods in my Vector
struct (which is designed after std::vector and thus has similar members) and
mistakenly assumes it is a range (and it's not).

The language change shouldn't have caused this compilation error, be it
implemented more correct, that's why I marked it as a regression :)

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[Issue 2984] Failure to find front/back/popBack/popFront/etc should fall back to opApply

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Leandro Lucarella llu...@gmail.com changed:

   What|Removed |Added

 CC||dsim...@yahoo.com


--- Comment #5 from Leandro Lucarella llu...@gmail.com 2009-11-16 12:44:28 
PST ---
*** Issue 3514 has been marked as a duplicate of this issue. ***

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[Issue 2984] Failure to find front/back/popBack/popFront/etc should fall back to opApply

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Steven Schveighoffer schvei...@yahoo.com changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution||DUPLICATE


--- Comment #6 from Steven Schveighoffer schvei...@yahoo.com 2009-11-16 
14:04:03 PST ---
Although bug 3514 came later, it captures more information, and following the
fix prescribed in 3514 would make this bug sort of moot.  There is no reason to
have a special case of partially implemented range functions vs. opApply --
opApply should be the default choice even with valid range functions.

*** This issue has been marked as a duplicate of issue 3514 ***

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[Issue 2984] Failure to find front/back/popBack/popFront/etc should fall back to opApply

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--- Comment #1 from Koroskin Denis 2kor...@gmail.com  2009-05-15 16:21:50 PDT 
---
Error message issued:
Vector.d(83): Error: no property 'popFront' for type 'Vector!(int)'

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[Issue 2984] Failure to find front/back/popBack/popFront/etc should fall back to opApply

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--- Comment #2 from Koroskin Denis 2kor...@gmail.com  2009-05-15 16:22:13 PDT 
---
Note that adding

Type[] opSlice()
{
return _elements[0.._size];
}

to the Vector struct will result int the following error message instead:

Error: undefined identifier module Vector.empty
Error: function expected before (), not module Vector.empty of type void
Error: undefined identifier module Vector.popFront
Error: function expected before (), not module Vector.popFront of type void
Error: undefined identifier module Vector.front
Error: function expected before (), not module Vector.front of type void

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