Re: Subclassing a NSMutableArray
Re: Subclassing a NSMutableArray
- Subject: Re: Subclassing a NSMutableArray
- From: Ondra Cada <email@hidden>
- Date: Thu, 16 Mar 2006 18:39:39 +0100
Oh, by the way, one more suggestion:
On 16.3.2006, at 16:57, Lorenzo wrote:
- (void)setParam:(int)par to:(float)newValue verbose:(BOOL)verbose
{
int i, totObjects = [self count];
for(i = 0; i < totObjects; i++){
id item = [self objectAtIndex:i];
[item setParam:par to:newValue verbose:verbose];
}
}
Don't, unless you have to. Use enumerators instead--they are more
efficient, cleaner design-wise, and less error-prone from the
programmer's point of view:
for (id o,en=[self objectEnumerator];o=[en nextObject];)
[o setParam:par to:newValue verbose:verbose];
Myself, I prefer a handy macro for these cases:
#define forall3(variable,enumerator,enumerable) for (id
variable,enumerator=[enumerable objectEnumerator];(variable=
[enumerator nextObject]);)
#define forall(variable,enumerable) forall3
(variable,_OCS_OCS_OCS_internal_enumerator_,enumerable)
then it looks like
forall (o,self) [o ....];
---
Ondra Čada
OCSoftware: email@hidden http://www.ocs.cz
private email@hidden http://www.ocs.cz/oc
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