[OC Foundationフレームワーク-6]NSMutablesString

NSStringは可変ではありません
NSMutablesStringは可変文字列です
 
1.初期化
2.直列文字列
3.置換文字列
4.文字列の挿入
5.文字列の削除
 

 1 #pragma mark buffer string create

 2 void stringCreate()

 3 {

 4     NSMutableString *mutStr = [[NSMutableString alloc] initWithCapacity:10];

 5     [mutStr setString:@"Go!"];

 6     NSLog(@"%@", mutStr);

 7     [mutStr appendString:@"Hello"];

 8     [mutStr appendFormat:@",age is %i and height is %.2f", 12, 1.54];

 9     NSLog(@"%@", mutStr);

10    

11     //Replace string

12     NSRange r = [mutStr rangeOfString:@"age"];

13     [mutStr replaceCharactersInRange:r withString:@"number"];

14     NSLog(@"%@", mutStr);

15    

16     //Insert string

17     [mutStr insertString:@"insert" atIndex:2];

18     NSLog(@"%@", mutStr);

19    

20     //Delete string

21     NSRange r2 = [mutStr rangeOfString:@"height"];

22     [mutStr deleteCharactersInRange: r2];

23     NSLog(@"%@", mutStr);

24 }