CODEWITHSUNDEEP
objective-ciphonensstring
iPhone
iPhone

Reputation: 4170

NSString - remove all characters after last white space

My string is @"Hello, I am working as an ios developer"

Now I want to remove all characters after word "ios"

Ultimately I want to remove all characters after last white space character.

How can I achieve this?

Upvotes: 3

Views: 2203

Answers (3)

Andrew Romanov
Andrew Romanov

Reputation: 5076

I agree with @Bhavin, but I think, better is using of [NSCharacterSet whitespaceCharacterSet] to determine whitespace characters.

    NSString* str= @"Hello, I am working as an ios developer";

    // Search from back to get the last space character
    NSRange range= [str rangeOfCharacterFromSet:[NSCharacterSet whitespaceCharacterSet] options:NSBackwardsSearch];

    // Take the first substring: from 0 to the space character
    NSString* finalStr = [str substringToIndex: range.location]; // @"Hello, I am working as an ios"

Upvotes: 4

Muhammad Waqas Bhati
Muhammad Waqas Bhati

Reputation: 2805

you can also Achieve this using REGEX

NSString* str= @"Hello, I am working as an ios developer";
NSString *regEx = [NSString stringWithFormat:@"ios"];///Make a regex
NSRange range = [str rangeOfString:regEx options:NSRegularExpressionSearch];
if (range.location != NSNotFound) 
{

    NSString *subStr=[str substringToIndex:(range.location+range.length)];
}

this will search for first "ios" keyword and will discard after words

Hope it will help.

Upvotes: 1

Bhavin
Bhavin

Reputation: 27225

Sample Code :

NSString* str= @"Hello, I am working as an ios developer";

// Search from back to get the last space character
NSRange range= [str rangeOfString: @" " options: NSBackwardsSearch];

// Take the first substring: from 0 to the space character
NSString* finalStr = [str substringToIndex: range.location]; // @"Hello, I am working as an ios"

Upvotes: 9

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