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Implement filteredOrderedSetUserPredicate

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This commit is contained in:
Gregory John Casamento 2019-06-07 12:57:08 -04:00
parent e97ecd6e03
commit bb6f7ceed8
1 changed files with 17 additions and 5 deletions
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22
Source/NSOrderedSet.m
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@ -692,13 +692,13 @@ static SEL rlSel;
return [self objectAtIndex: 0];
}
- (id) objectAtIndex: (NSUInteger)index
- (id) objectAtIndex: (NSUInteger)index // required override...
{
[self subclassResponsibility: _cmd];
return nil;
}
- (id) objectAtIndexedSubscript: (NSUInteger)index
- (id) objectAtIndexedSubscript: (NSUInteger)index // required override...
{
[self subclassResponsibility: _cmd];
return nil;
@ -1018,7 +1018,7 @@ static SEL rlSel;
- removeObserver:forKeyPath:
- removeObserver:forKeyPath:context:
*/
- (NSUInteger)_countForObject: (id)object
- (NSUInteger)_countForObject: (id)object // required override...
{
return 1;
}
@ -1143,7 +1143,7 @@ static SEL rlSel;
- (NSArray *)
sortedArrayWithOptions: (NSSortOptions)options
usingComparator: (NSComparator)comparator
usingComparator: (NSComparator)comparator
{
return nil;
}
@ -1151,7 +1151,19 @@ static SEL rlSel;
// Filtering Ordered Sets
- (NSOrderedSet *)filteredOrderedSetUsingPredicate: (NSPredicate *)predicate
{
return nil;
NSMutableOrderedSet *result = nil;
NSEnumerator *e = [self objectEnumerator];
id object = nil;
result = [NSMutableOrderedSet orderedSetWithCapacity: [self count]];
while ((object = [e nextObject]) != nil)
{
if ([predicate evaluateWithObject: object] == YES)
{
[result addObject: object]; // passes filter
}
}
return GS_IMMUTABLE(result);
}
// Describing a set