Really? OK. On 21 Sep 2014, at 00:05, SevenBits <sevenbitst...@gmail.com> wrote:
> On Sep 20, 2014, at 1:01 PM, 2551 <2551p...@gmail.com> wrote:
>
>> I've searched high and low (or roundabouts in circles) for a built in method
>> that will return the difference between two strings as a string.
>>
>> I hacked up this solution below, but it feels cludgy and isn't very robust
>> (punctuation will mess it up a little); worse, I can't help feeling I must
>> be reinventing the wheel. Finding the string that is the difference between
>> two other strings must be a basic need. How do you guys do this?
>
> Define what you mean the “difference between two strings”.
For example:
NSString *mary = @"mary had a little lamb, a little lamb she had";
NSString *scary = @"mary had a little lamb, a little naughty fella of a
lamb she had for sure";
NSString *isDifferent = [self getDifference:mary and: scary];
NSLog(@"%@", isDifferent);
The method I posted below produces the difference that I want ("naughty fella
of a for sure"). But I want to know if there's a more orthodox and robust
solution.
>
>>
>>
>>
>> -(NSString *)getDifference: (NSString *)aString and:(NSString
>> *)anotherString {
>> int i = aString.length;
>> int j = anotherString.length;
>> NSString *result, *longest, *shortest;
>>
>> if (i == j) {
>> result = @"";
>> return result;
>> }
>>
>> if (i > j) {
>> longest = aString;
>> shortest = anotherString;
>> } else {
>> longest = anotherString;
>> shortest = aString;
>> }
>>
>> NSArray *fa = [longest componentsSeparatedByString: @" " ];
>> NSArray *sa = [shortest componentsSeparatedByString: @" "];
>> NSMutableArray *remainder = [NSMutableArray arrayWithArray:fa];
>> [remainder removeObjectsInArray:sa];
>> result = [remainder componentsJoinedByString:@" "];
>> return result;
>>
>> }
>>
>> _______________________________________________
>>
>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
>>
>> Please do not post admin requests or moderator comments to the list.
>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>
>> Help/Unsubscribe/Update your Subscription:
>> https://lists.apple.com/mailman/options/cocoa-dev/sevenbitstech%40gmail.com
>>
>> This email sent to sevenbitst...@gmail.com
>
signature.asc
Description: Message signed with OpenPGP using GPGMail
_______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
