How to remove the first space from the NSString?

Question

I want to remove only first space in below string.

NSString *str = @"IF_Distance (GET_Mi mi=km*1.4,STRING1,STRING2)";

Note: There is a space after IF_Distance and another space after GET_Mi. I am unable to remove the space after IF_Distance.

Possible duplicate of [Replace only the first instance of a substring in an NSString](https://stackoverflow.com/questions/8608346/replace-only-the-first-instance-of-a-substring-in-an-nsstring) — adev, Aug 02 '17 at 05:29
*I want to remove only first space in below string.* The solution is obvious and quite simple: `str = @"IF_Distance(GET_Mi mi=km*1.4,STRING1,STRING2)"` ;-) — Amin Negm-Awad, Aug 02 '17 at 05:48

score 2 · Answer 1 · answered Aug 02 '17 at 05:28

2

Use rangeOfString: to locate the first space, then use stringByReplacingCharactersInRange:withString: to replace it with the empty string.

answered Aug 02 '17 at 05:28

CRD

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score 0 · Answer 2 · answered Aug 02 '17 at 05:07

0

Remove space by using below code.

NSString *str = @"IF_Distance (GET_Mi mi=km*1.4,STRING1,STRING2)";

NSString *secondString = [str stringByReplacingOccurrencesOfString:@"IF_Distance " withString:@"IF_Distance"];

answered Aug 02 '17 at 05:07

Neha Gupta

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1

What if the string is dynamically changing? – Anurag Sharma Aug 02 '17 at 05:15
@AnuragSharma This is not the Q. ;-) – Amin Negm-Awad Aug 02 '17 at 05:50

score 0 · Answer 3 · answered Aug 02 '17 at 05:43

0

Try This:

NSString *str = @"IF_Distance (GET_Mi mi=km*1.4,STRING1,STRING2)";
NSString *firstStringContainingSpace = [[str componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] firstObject];//firstStringContainingSpace = IF_Distance

str = [str stringByReplacingCharactersInRange:[str rangeOfString:[NSString stringWithFormat:@"%@ ",firstStringContainingSpace]] withString:firstStringContainingSpace];

Output: str = @"IF_Distance(GET_Mi mi=km*1.4,STRING1,STRING2)";

answered Aug 02 '17 at 05:43

Torongo

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`[NSString stringWithFormat:@"%@ ",firstStringContainingSpace]` is pointless. Moreover, separating the whole string by whitespaces while only the first one is relevant, is pointless, too. – Amin Negm-Awad Aug 02 '17 at 05:53

score -1 · Accepted Answer · answered Aug 02 '17 at 05:55

You can remove first space by using following code:

First find space by using rangeOfString: and then remove by using stringByReplacingCharactersInRange:withString: method.

Like,

NSString *str = @"IF_Distance (GET_Mi mi=km*1.4,STRING1,STRING2)";
NSString *strSpace = @" ";

NSRange range = [str rangeOfString:strSpace];
NSString *strFinal;

if (NSNotFound != range.location) {

     strFinal = [str stringByReplacingCharactersInRange:range withString:@""];
}

score -1 · Answer 5 · answered Aug 02 '17 at 06:14

If you are looking for some more universal way - this is the variant of it:

- (NSString *)removeWhitespaces:(NSString *)string {

    NSMutableArray * stringComponents = [[string componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] mutableCopy];
    NSString * fStringComponent = [stringComponents firstObject];
    [stringComponents removeObject:fStringComponent];

    return [fStringComponent stringByAppendingString:[stringComponents componentsJoinedByString:@" "]];
}

How to remove the first space from the NSString?

5 Answers5