Meaning of SELECTOR in English
< programming > 1. In Smalltalk or Objective C , the syntax of a message which selects a particular method in the target object .
2. An operation that returns the state of an object but does not alter that state. Selector functions or method s often have names which begin with "get" and corresponding modifier methods or procedures whose names begin with "set".
FOLDOC computer English dictionary. Английский словарь по компьютерам FOLDOC. 2012