Dollar

Dollar is a Swift library that provides useful functional programming helper methods without extending any built in objects. It is similar to Lo-Dash or Underscore.js in Javascript.

Cent is a library that extends certain Swift object types using the extension feature and gives its two cents to Swift language. It is now moved into a separate repo to support Swift Package Manager

NOTE: Starting Swift 4 $ is no longer a valid identifier. So you get the following error: ‘$’ is not an identifier; use backticks to escape it . Instead use Dollar.