swift234

Omit needless words: strip out prefixes that are redundant with the result type.

When the prefix of a method/property name is restating the result
type, followed by "By" and then a gerund, drop everything up to the
gerund. For example:

  func stringByAppendingString(string: String) -> String

becomes

  func appending(string: String) -> String

Swift SVN r31683