Warning

[MicroWizard]

Really nice ;-)))
Should be collected in D.Learn (not only) for beginners.

Tamas Nagy

In article <43FDD956.5020603 at nospam.org>, Georg Wrede says...
>
>Derek Parnell wrote:
>
>> Sorry, but I forgot something nice. Anonymous structs don't seem to be
>> solving any problem that I've come across, but anonymous unions are very
>> nice.
>>  
>>  struct S
>>  {
>>    int type;
>>    union { 
>>       int i; 
>>       long l;
>>       short s;
>>       real r;
>>       float f;
>>       Foo foo;
>>    }
>>  }
>
>Of course you know, and all regulars here know, but the casual reader 
>has to be warned here.
>
>NEVER MIX VALUE AND REFERENCE types in a union!
>
>While technically it poses no problem, in real life you'll end up 
>shooting yourself in the foot -- faster than it takes to say 'Ouch!'
>
>And if you don't, the later maintainer of your code *will* shoot you.