Objective-C字符串连接

Posted 2021-02-23

This is all about appending strings.

/* append to a mutable string */
NSMutableString *aString = [[NSMutableString alloc] initWithString:@"If you don't eat your meat"];
[aString appendString:@" you can't have any pudding."];
 
NSMutableString *bString1 = [[NSMutableString alloc] initWithString:@"We don't need"];
NSMutableString *bString2 = [[NSMutableString alloc] initWithString:@"no education."];
[bString1 appendFormat:@" %@", bString2];
 
/* concatenate 2 strings to make a 3rd */
NSString *string1 = @"This is";
NSString *string2 = @" a test.";
NSString *string3 = [string1 stringByAppendingString:string2];
 
/* assigning an appended string back to itself */
NSString *string1 = @"This is";
NSString *string2 = @" a test.";
string1 = [string1 stringByAppendingString:string2];