REDIM takes more resources than DIM?

[aurel]

My point was if we need to increase array size we should use REDIM ..right ?
so

DIM arr(100)
REDIM arr(1000)

that is only useful if we don't know what size we need..right?
so if we have loop ..for example which require more space then REDIM

in my own programs i never use REDIM i use fixed size.
but that is me ..