C like macro is useful

[davidl]

consider:

version(v1)
{
   enum e
   {
      a,
      b
   }
}
else
{
   enum e
   {
      a,
      b,
      c
   }
}

If my enum contains a lot of stuffs.... D version becomes a disaster.


consider:
version(v1)
{
   if ( cond1() && cond2() && a==b)
   {
      //blah
   }
}
else
{
   if ( cond1() && cond2() && a!=b)
   {
      //blah
   }
}

in C you can do it

if ( cond1() && cond2() &&
#ifdef v1
      a==b
#else
      a!=b
#endif
    )
{
    // blah
}


Any good and practical way to solve these?




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