A guy in our CocoaHeads group (Quinn Taylor, works at Apple), adopted
the old abandoned DataStructures framework by Phillip Morelock and has
given it new life. You can checkout the source from our SVN
repository here:
http://cocoaheads.byu.edu/code/CHDataStructures
I must say, Quinn has put a TON of effort into this. He's got a wide
variety of data structures, such as singly linked list, doubly linked
list, Andersson trees, AVL trees, Red-Black trees, Treaps, Unbalanced
trees, double-ended queues, regular queues, stacks, and a bunch more.
It's written for Leopard, supports fast enumeration, and even plays
nice in a GC environment.
I think the only "odd" thing about it is that you have to switch your
C dialect to GNU99 instead of the default C99, since C99 doesn't
support anonymous structs and unions.
Either way, it's an excellently written framework, with a full sweet
of unit tests, etc.
I encourage you to check it out.
Cheers,
Dave
On Mar 28, 2009, at 7:15 AM, an0...@gmail.com wrote:
I don't care the naming style, I care about the functionalities. And
it seems Cocoa is weak at supporting sorting-order-keeping data
structures at the high level APIs.
However, the reference is valuable. Thank you.
On Mar 28, 2009, at 6:45 PM, Andrew Farmer wrote:
On 28 Mar 09, at 01:25, an0...@gmail.com wrote:
I can not find any data structure in Cocoa that maintains sorting
order of items gradually added in, using the pairwise comparison
results, something like the canonical set in C++'s STL that is
usually implemented as a balanced tree.
Unlike the C++ and Java standard libraries, which name data
structures based on their implementation, Cocoa's data structures
are named to describe their intended use - the internal
implementation isn't exposed, but you can rest assured that it'll
use something appropriate for the application. (Indeed, the
internal implementation may change based on the size of the
collection.)
Anyways, since you're after an ordered list, what you want here is
NSMutableArray. Inserting elements into a sorted array comes up
once in a while; here's a recent discussion:
http://www.cocoabuilder.com/archive/message/cocoa/2009/1/16/227937
A ghost writing code with soul @ http://an00na.blogspot.com/.
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