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From: kerloch@gmail.com
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Le 24/12/2011 01:44, Gene Bushuyev a écrit :
> On Dec 21, 1:14 pm, Mathias Gaunard wrote:
>> On Dec 20, 8:55 am, DeMarcus wrote:
>>
>>> Hi,
>>
>>> I don't like macros.
>>
>> Macros are an essential C and C++ feature that allows to generate
>> code.
>> You can do repetition, branching etc.
>>
>> Their main use is to avoid code repetition for things that cannot be
>> done by simply using functions (such as generating classes, a set of
>> functions, specializations, etc.)
>>
>> A lot of things can only be done with macros.
>
> I don't want to recite the list why macros is obnoxious, ugly, smelly,
> bad language feature. Herb Sutter already wrote that piece. I only
> want to mention a few things. If a macro cannot be reasonably
> eliminated from the code, it suggests to me that either the code
> design is wrong, or language is lacking a feature (reflection
> perhaps). I also found that automatic code generation can often be a
> better alternative to complicated macros. I definitely think trivial
> macros, which can be implemented using normal language features have
> no right to exist, and it makes sense to go an extra mile wiping them
> out. Who didn't curse MS every time they stumbled on their min/max
> macros.
For those who have the book by themselves, look at Effective C++ by
Scott Meyers Item 2 'Prefer consts, enums, and inlines to #define' for
some arguments against macros in C++. Note that Stroustrup in many
places (unfortunatley I have no precise reference at hand) claims macros
(which he humourously qualifies as 'nasty' or 'disgusting') should be
maximally avoided...
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