switch versus if-statements? - Printable Version

switch versus if-statements? - Printable Version

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switch versus if-statements? - LarzI - 07.10.2010

What is really the fastest and most efficient?

I'm familiar with using switches when checking IDs, for an example:

pawn Код:

switch(vehicleid)
{
    case 0: //blah
    case 1..32: //more blah
}

But is that faster than just doing

pawn Код:

if(vehicleid == 0) 
{ /*blah*/ }
else if(vehicleid > 0 && vehicleid < 33)
{ /*more blah*/ }

... or is it just shorter?

Re: switch versus if-statements? - Harry_Gaill - 07.10.2010

From previous memories I recall in PAWN there is no difference between the 2 (at low level). It only matters in languages like C, C++ etc... Correct me if I'm mistaken though.

Re: switch versus if-statements? - jameskmonger - 07.10.2010

With one or two in each, it makes no difference. Although 1000 cases in a switch statement is more efficient than 1000 if-else-statements.

Re: switch versus if-statements? - Zeex - 07.10.2010

speed? you better should worry about your algorithms' efficiency rather than about such little unimportant things which don't really affect the total speed of your code anyway, so fuck it and use what you like more

Re: switch versus if-statements? - LarzI - 07.10.2010

Quote:

Originally Posted by jameskmonger

With one or two in each, it makes no difference. Although 1000 cases in a switch statement is more efficient than 1000 if-else-statements.

It was just an example, I meant in larger cases of course.

Quote:

Originally Posted by Harry_Gaill

From previous memories I recall in PAWN there is no difference between the 2 (at low level). It only matters in languages like C, C++ etc... Correct me if I'm mistaken though.

Hmm, ok.

Quote:

Originally Posted by Zeex

speed? you better should worry about your algorithms' efficiency rather than about such little unimportant things which don't really affect the total speed of your code anyway, so fuck it and use what you like more

Quote:

Originally Posted by Myself

What is really the fastest and most efficient?

I was just wondering, 'cause I want to optimise my code as much as possible.