What does the $ prefix mean to certain properties of Flex objects?
For example, item. $width
The notation of $identifier is The naming convention used for mx_internal functions (mainly getters/setters) in the Flex SDK. The _identifier convention is used for private and mx_internal variables.
For the exact definition of naming conventions, please check this page: Coding Conventions – Flex SDK
What does the $ prefix mean to certain properties of Flex objects?
For example, project.$width
The $identifier notation is the mx_internal function in the Flex SDK (mainly getters/setters) The naming convention is used. The _identifier convention is used for private and mx_internal variables.
For the exact definition of the naming convention, please check this page: Coding Conventions – Flex SDK