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Is there a difference "undef, const, define" - Printable Version

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Is there a difference "undef, const, define" - Manowar - 27.12.2013

Is there a difference how to write and which option is best

1.
PHP код:
#undef MAX_PLAYERS
const MAX_PLAYERS = 10; 
2.
PHP код:
#undef MAX_PLAYERS
#define MAX_PLAYERS 10 


Re: Is there a difference "undef, const, define" - nmader - 28.12.2013

Personally I would prefer the second, because I'm most familiar with it. I think most people are more familiar with the second;l however I believe it is a matter of opinion.

Re: Is there a difference "undef, const, define" - park4bmx - 28.12.2013

const is a modifier, it must go with new or another variable declarator.
Can be used as a define that can hold an array

Re: Is there a difference "undef, const, define" - Ada32 - 28.12.2013

const tells the compiler that this is unchangeable, #define changes all instances at compilation