🚀 go-pugleaf

>>                                                                            
>>    if ((WinFont = (struct TextFont *) OpenFont (&ta)) == NULL &&           
>>           (WinFont = (struct TextFont *) OpenDiskFont (&ta)) == NULL) {    
>>       Abort ("Can't open font\n");                                         
>>      }                                                                     
>                                                                             
>Well, I wouldn't do that either, because you can't be sure what the compiler 
>is going to do with your code.  You've got two expressions hooked together   
>with a logical 'and' -- now which one will the final code try first?  The one
>on the right?  Uh-oh.  This is better:                                       
                                                                             
Anyone who knows C also knows that the logical operators && and || 
are GUARANTEED to evaluate left-right and only so far as to know the final
result of the expression. I.e in "a && b", if a is false (0) the compiler
knows that the expression is false and b isn't evaluated. If a is true b has
to be evaluated to determine the value of the expression.

This applies to C, C++ and Modula-2.

----------------
Robin Rosenberg