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M5SelectorMap 1.1.1

You want to add pod 'M5SelectorMap', '~> 1.1' similar to the following to your Podfile:

target 'MyApp' do
  pod 'M5SelectorMap', '~> 1.1'
end

Then run a pod install inside your terminal, or from CocoaPods.app.

Alternatively to give it a test run, run the command:

pod try M5SelectorMap

Data structure for storing/enumerating SEL –> nil-able object/pointer relationships.