Why is capitalized property name not giving an error in Objective-C / UITouch?

Question

`resultLabel` is a `UILabel`. So why does ``` resultLabel.Text= @""; ``` not give an error? It should be `resultLabel.text`. Thanks for any insights.

Accepted Answer

The default setter function for a property `foo` is `setFoo:`, with the first letter capitalized. Therefore both lines

```
resultLabel.text = @"";
resultLabel.Text = @"";
```

generate the same code

```
[resultLabel setText:@""];
```

This works only with the setter function, not with the getter:

```
NSString *x = self.text; // --> x = [self text]
NSString *x = self.Text; // --> x = [self Text]
```

As a consequence, you cannot have two read-write properties that differ only in the case of the first letter, this will generate a compiler error:

```
@property (nonatomic, strong) NSString *text;
@property (nonatomic, strong) NSString *Text;

self.text = @"foo";
// error: synthesized properties 'text' and 'Text' both claim setter 'setText:'
```

Solution