dynamic arrays

[Homer_simpson]

i know i can create arrays like this:

int *var;
var = new int[1000];

but how can i create an array with unknown size and add to it whenever i need?

[rizzix]

u can't

u might need to use a Vector. i don't know much about vectors in c++. but in java thats what we use.

[Catalyst]

well if ur working with something that needs very high speeds (like gfx)
vectors might be too slow for ur needs
another method of making a temporay array and transfering it all over would also be too slow

is there ne more specific that might help in finding the solution that you can provide?

[Homer_simpson]

well... there's a method i learned long ago back when i was using pascal... i create a structure hold 3 values : previous,value,next
previous hold the pointer to the previous structure and next hold the pointer to the next and value is the value... i was gonna need arrays to hold my textures... i think this method is gonna work just fine...and i can load new textures at any time...

[rizzix]

btw the method ur talking about is known as LinkedLists, i'm not sure if it is a lot more faster. but i'm pretty sure vectors are pretty fast. you could modify the buffer size of the vector to improve performance

[Homer_simpson]

can u explain to me how vectors work?

[Catalyst]

linked lists should be fine for textures (i thought u might be using them for verticies and such where they would be far too slow)

if u want to save ur self some trouble u can use the standard list class
std::list it has a lot of good features and is painless to implement

[Homer_simpson]

yes but i am still interested in knowing about vectors...

[Catalyst]

http://www.msoe.edu/eecs/ce/courseinfo/stl/vector.htm

[Homer_simpson]

ah... ic...TY for the link man...