[pokemonmaster]

Hi,
I just want to know whats the difference between the

PHP Code:

#define 


And the

new

Why don't i use for example

PHP Code:

new AUTHOR[]="Pokemonmaster" 


Instead of

PHP Code:

#define AUTHOR "Pokemonmaster" 


Does the "define" command uses different includes than the "new" ?

[Exolent[jNr]]

#define is a preprocessor directive which replaces wherever you have that "name" into the value when it compiles.

For example:

#define TEST 1
server_print("%d", TEST);

It would translate to:

server_print("%d", 1);

And then compile.

What's the difference? Well, when using a define multiple times, it is possible to have issues.
For example:

#define TAG "[AMXX]"

// ...

server_print("%s WOOO", TAG);
log_amx("%s Something logged.", TAG);

That translates to:

server_print("%s WOOO", "[AMXX]");
log_amx("%s Something logged.", "[AMXX]");

The problem here is that you wasted 2 memory spaces with the same string because each "[AMXX]" is treated as its own string.
You could have saved memory space if you had used a variable.

To learn more about the preprocessor or AMXX scripting in general, check out the Code Snippets / Tutorials section.

[Doc-Holiday]

In the event that you use something like this what is the benfit from doing it these 2 ways kinda on the same note

const MAX_PLAYERS 32
new Array[MAX_PLAYERS+1];

vs

#define MAX_PLAYERS 32
new Array[MAX_PLAYERS+1];

vs

new Array[33];

[fysiks]

I would think that if you use the variable more than once then the first is the more efficient one. The second and third are identical except that the processor has to perform the addition.

[Doc-Holiday]

Originally Posted by fysiks I would think that if you use the variable more than once then the first is the more efficient one. The second and third are identical.

Thanks.

[jim_yang]

all three cases will be calculated during compiling time. the benifit is:
1 and 2 is adjustable in the future developing. imagine you have a large project which uses that number a lot(usually not in the same file). some day you want to change it to larger or smaller. you don't have to trace it everywhere, just change the define or declaration.
The different between 1 and 2 is that, 1 can do error check when compiling, because it's a varible, it takes memory space. 2 just do the mechanic replacement in pre-compiling time.

[pokemonmaster]

OK thanks all for your help,
but one last question, which one is better "define" or "new"?

[MyPc]

Originally Posted by pokemonmaster OK thanks all for your help, but one last question, which one is better "define" or "new"?

Read the comments again and find out

[pokemonmaster]

Originally Posted by MyPc Read the comments again and find out

I read all of them but Exolent's comment was the best one i could understand, as i started learning to make scripts, i don't know what most of the functions in other comments do.

But thanks anyway

And one last thing, is there any tutorial do you recommend a beginner that doesn't know anything about scripting, you recommend to start with?

[matsi]

Originally Posted by pokemonmaster I read all of them but Exolent's comment was the best one i could understand, as i started learning to make scripts, i don't know what most of the functions in other comments do. But thanks anyway And one last thing, is there any tutorial do you recommend a beginner that doesn't know anything about scripting, you recommend to start with?

I think there is tutorial to find that beginner tutorial.