Selector Expressions (Cocoa)

The __selector keyword can be used to get a selector reference on Cocoa, for example to dynamically invoke methods, or pass them to Cocoa APIs that expect a SEL type.

SEL s = __selector(compare:options:);

Using the selector literal syntax will cause the compiler to check whether the specified selector is valid and known, and a warning will be emitted if a selector name is provided that does not match any method known to the compiler. This provides extra safety over using the NSSelectorFromString function.

See Also

• Selectors
• selector() in Oxygene