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NSString
LinHuijie edited this page Jan 8, 2019
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1 revision
| method name | return value | when error return |
|---|---|---|
| length | NSUInteger | 0 |
| characterAtIndex: | unichar | 0 |
| substringFromIndex: | NSString | nil |
| substringToIndex: | NSString | nil |
| substringWithRange: | NSString | nil |
| stringByAppendingString: | NSString | nil |
| stringByReplacingCharactersInRange:withString: | NSString | nil |
| stringByReplacingOccurrencesOfString:withString:options:range: | NSString | nil |
| hasPrefix: | BOOL | NO |
| hasSuffix: | BOOL | NO |
| rangeOfString:options:range:locale: | NSRange | NSMakeRange(NSNotFound, 0) |
| rangeOfCharacterFromSet:options:range: | NSRange | NSMakeRange(NSNotFound, 0) |
| rangeOfComposedCharacterSequenceAtIndex: | NSRange | NSMakeRange(NSNotFound, 0) |