Swift update with iOS 8 beta 6.
Added a new section about Initializer Requirements in protocols.
Added a new section about Class-Only Protocols.
Assertions can now use string interpolation. Removed a note to the contrary.
Updated the Concatenating Strings and Characters section to reflect the fact that
Charactervalues can no longer be combined with the addition operator (
+) or addition assignment operator (
+=). These operators are now used only with
Stringvalues. Use the
appendmethod to append a single
Charactervalue onto the end of a string.
Added information about the
availabilityattribute to the Declaration Attributes section.