Sorting an array of Objective-c objects

Question

So I have a custom class Foo that has a number of members:

@interface Foo : NSObject {
    NSString *title;
    BOOL     taken;
    NSDate   *dateCr         


        

Answer 1

That's quite simple to do.

First, in your Foo object, create a method

- (NSComparisonResult) compareWithAnotherFoo:(Foo*) anotherFoo;

Which will return

[[self dateCreated] compare:[anotherFoo dateCreated]];

In the end, call on the array

[yourArray sortUsingSelector:@selector(compareWithAnotherFoo:)];

Hope this helps, Paul