iOS Checking a specific letter on NSString.

[TalShani]

Hello Guys..
I have an NSString named word (as you can guess, its one word),
I don't know the length of the string.
I need to check if the last letter (and only the last),
Contains the sign "?" or "!", or any other sign that is not A-Z, a-z or 1-9.
If the sign is not A-Z, a-z, or 1-9,
than the sign will be erased from the string.
Exsample: hello! = hello.
Please just help me find the command for doing that,
I'm looking for it for a long time now..
Hope you will answer me as soon as possible.
Tal Shani.

 

[ritsard]

You can use this method - (unichar)characterAtIndexNSUInteger)index in the NSString class to get the last character. Then compare if it is equal to any of the ones you are looking for. If it is, you can then get a substring with a range of 0 to the length minus one.

 

[TalShani]

You can use this method - (unichar)characterAtIndexNSUInteger)index in the NSString class to get the last character. Then compare if it is equal to any of the ones you are looking for. If it is, you can then get a substring with a range of 0 to the length minus one.

And how I can get the full length of the string?

 

[dejo]

And how I can get the full length of the string?

Start by learning to read the documentation. There's an instance method of NSString that gives you exactly what you want.

 

[TalShani]

Start by learning to read the documentation. There's an instance method of NSString that gives you exactly what you want.

And its name is..?

 

[ritsard]

it is called length. For the complete listing of all available NSString methods, you can check this out:

http://developer.apple.com/mac/libr...lasses/NSString_Class/Reference/NSString.html

 

[dejo]

And its name is..?

I was gonna ask you what you thought it might be called (i.e. take a guess) but ritsard has spoiled the surprise.

For the complete listing of all available NSString methods, you can check this out:

http://developer.apple.com/mac/libr...lasses/NSString_Class/Reference/NSString.html

Yeah, I already linked to that in my previous post.

 

[ritsard]

@dejo sorry bout that

 

[lloyddean]

TalShani, am I wrong in assuming English is not your main language?

 

[TalShani]

TalShani, am I wrong in assuming English is not your main language?

Nope, I'm from israel..

 

[jared_kipe]

Getting the last character of a string is good, but now you need to compare it to a list of other characters.

Look at NSCharacterSet to accomplish this.

Namely...

extern NSString *string;
NSCharacterSet *set = [NSCharacterSet alphanumericCharacterSet];
if ( ![set characterIsMember: [string characterAtIndex: [string length]-1]] ){
     // code that you use to remove the last character
}