Setting a whole bool-array to FALSE

[chronozphere]

Hi fellow-c0ders :)

i've got a short question. Does anyone know a trick how to set an entire bool-array to false.
I usually did this with a loop, but it just doesn't feel good. I need this quite often for initialization.

Anyone?

Thanx :)

[waran]

var
a: array [0..5] of boolean;
begin
fillchar(a, length(a)*sizeof(boolean), 0);
end.

This, of course, works with dynamic arrays as well.

It might also be faster than your for-method since I guess fillchar deals
with the array as whole chunk of memory. So the code gets rid off
the jumps, comparisons and assignments a for loop needs.

[arthurprs]

great, i'm often using loops for it :)

[waran]

Ok, I tried now.

Its indeed faster than a loop. The bigger the array is, the faster
fillchar gets compared to a loop.


edit: added a comma ^^

[arthurprs]

Ok, I tried now.

Its indeed faster than a loop. The bigger the array is the faster
fillchar gets compared to a loop.

sorry for my english, its faster or slower or equal performance?

[chronozphere]

Okay... i think he means this:

When using very big array's, fillchar can give a great performance boost.
When using smaller array's, the performance boost is less, when compared to the FOR loop.

I must say that the sentence is a litlle hard to understand, because of the absence of punctuation. :)

Hope you understand ;)

[arthurprs]

thanks, so i will use it :D