iOS Programming Vocabulary 5

class extensions – properties declared in m file, not h file. class extensions are not visible to other classes. properties in header file are visible to other classes.

The Run Loop and Redrawing Views – listens for events and finds appropriate handler methods

setNeedsDisplay – re-render the view

setNeedsDisplayInRect – mark only a portion of a view as needing to be redrawn

UIScrollView – supports panning and paging.