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March 2014 update

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Ingy döt Net 2014-04-02 16:56:35 +00:00
parent 09687c4926
commit a25938f123
1846 changed files with 21876 additions and 5203 deletions
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68
Task/Collections/Objective-C/collections.m
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@ -2,19 +2,12 @@
void show_collection(id coll)
{
id el;
NSEnumerator *en;
if ( [coll respondsToSelector: @selector(keyEnumerator)] ) {
en = [coll keyEnumerator];
} else {
en = [coll objectEnumerator];
}
while( (el = [en nextObject]) != nil)
for ( id el in coll )
{
if ( [coll respondsToSelector: @selector(countForObject:)] ) {
NSLog(@"%@ appears %d times", el, [coll countForObject: el]);
if ( [coll isKindOfClass: [NSCountedSet class]] ) {
NSLog(@"%@ appears %lu times", el, [coll countForObject: el]);
} else if ( [coll isKindOfClass: [NSDictionary class]] ) {
NSLog(@"%@ -> %@", el, [coll valueForKey: el]);
NSLog(@"%@ -> %@", el, coll[el]);
} else {
NSLog(@"%@", el);
}
@ -24,37 +17,34 @@ void show_collection(id coll)
int main()
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
@autoreleasepool {
// create an empty set
NSMutableSet *set = [[NSMutableSet alloc] init];
// populate it
[set addObject: @"one"];
[set addObject: [NSNumber numberWithInt: 10]];
[set addObjectsFromArray: [NSArray arrayWithObjects: @"one",
[NSNumber numberWithInt: 20],
[NSNumber numberWithInt: 10],
@"two", nil] ];
// let's show it
show_collection(set);
// create an empty set
NSMutableSet *set = [[NSMutableSet alloc] init];
// populate it
[set addObject: @"one"];
[set addObject: @10];
[set addObjectsFromArray: @[@"one", @20, @10, @"two"] ];
// let's show it
show_collection(set);
// create an empty counted set (a bag)
NSCountedSet *cset = [[NSCountedSet alloc] init];
// populate it
[cset addObject: @"one"];
[cset addObject: @"one"];
[cset addObject: @"two"];
// show it
show_collection(cset);
// create an empty counted set (a bag)
NSCountedSet *cset = [[NSCountedSet alloc] init];
// populate it
[cset addObject: @"one"];
[cset addObject: @"one"];
[cset addObject: @"two"];
// show it
show_collection(cset);
// create a dictionary
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
// populate it
[dict setValue: [NSNumber numberWithInt: 4] forKey: @"four"];
[dict setValue: [NSNumber numberWithInt: 8] forKey: @"eight"];
// show it
show_collection(dict);
// create a dictionary
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
// populate it
dict[@"four"] = @4;
dict[@"eight"] = @8;
// show it
show_collection(dict);
[pool release];
}
return EXIT_SUCCESS;
}