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iPhone 101
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To concatenate two strings into a new string:
NSString *string1 = @"This is"; NSString *string2 = @" a test."; NSString *string3 = [string1 stringByAppendingString:string2]; // string3 is now @"This is a test." string1 and string2 are unchanged.
You can also assign the new string back to string1:
NSString *string1 = @"This is"; NSString *string2 = @" a test."; string1 = [string1 stringByAppendingString:string2]; // string1 is now @"This is a test."
If you're using a NSMutableString, you can simply call the appendString method:
NSMutableString *string1 = [NSMutableString stringWithString:@"This is"]; NSString *string2 = @" a test."; [string1 appendString:string2]; NSLog(@"string1: %@", string1); // string1 is now @"This is a test."