Re: Predicate and beginswith
Re: Predicate and beginswith
- Subject: Re: Predicate and beginswith
- From: Shawn Erickson <email@hidden>
- Date: Tue, 22 May 2007 07:02:06 -0700
On May 21, 2007, at 9:43 PM, Joel Levin wrote:
Hi Brian,
The following code works perfectly as expected:
NSString* arg = @"<htm";
NSMutableArray* array = [NSMutableArray array];
[array addObject:@"<html>"];
[array addObject:@"<form>"];
NSPredicate* predicate = [NSPredicate predicateWithFormat:@"SELF
beginswith[cd] %@", arg];
NSArray* filtered = [array filteredArrayUsingPredicate:predicate];
NSLog(@"%@", array);
NSLog(@"filtered by: %@", arg);
NSLog(@"%@", filtered);
The only difference here is that in your code you are setting
allKeys back to the result of running a method on allKeys with this
line:
allKeys = [allKeys
filteredArrayUsingPredicate:stringToCompletePredicate];
Try created a new array to hold the filtered array see if it makes
any difference (I'm not sure why this would be a problem, but it's
literally the only difference, so it's worth a try).
He is creating a new array. The allKeys lvar is storage for a pointer
and it doesn't care what it points at.
To me is sounds like his [coloringEngine allKeys] is returning an
array with something other then he expects or stringToComplete is nil
or something other then he expects.
Brian use the debugger to understand what is going on. You can ask it
to print out the description of each object to ensure it is as you
expect.
-Shawn
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