Use nouns for classes and verbs for methods

Use nouns or noun phrases to name classes, interfaces, and objects:

CLASS /clean/account
CLASS /clean/user_preferences
INTERFACE /clean/customizing_reader

Use verbs or verb phrases to name methods:

METHODS withdraw
METHODS add_message
METHODS read_entries

Starting Boolean methods with verbs like is_ and has_ yields nice reading flow:

IF is_empty( table ).

We recommend naming functions like methods:

FUNCTION /clean/read_alerts