Ordered dictionary. Enumeration occurs in the order that entries were added. If an item is overwritten, the order is unchanged.
For example,
#import <GHODictionary/GHODictionary.h>
GHODictionary *dict = [GHODictionary dictionary];
dict[@"key1"] = @(1);
dict[@"key2"] = @(2);
dict[@"key1"] = @(3);
for (id key in dict) ... // @"key1", @"key2"
[dict allKeys]; // The same as enumeration, @"key1", @"key2"
[dict map:^(id key, id value) { ... }]; // (@"key1", @(3)), (@"key2", @(2))If you want to overwrite a value and have it moved to the end of the ordering, then remove it and re-add:
dict[@"key1"] = nil;
dict[@"key1"] = @(3);
[dict allKeys]; // @"key2", @"key1"Because it is ordered, it is also sortable:
dict[@"b"] = @(2);
dict[@"c"] = @(3);
dict[@"a"] = @(1);
[dict sortKeysUsingSelector:@selector(localizedCaseInsensitiveCompare:)];
[dict allKeys]; // @"a", @"b", @"c".package(url: "https://github.com/gabriel/GHODictionary", from: "1.2.0"),pod "GHODictionary"
github "gabriel/GHODictionary"