in?(*args) public

Returns true if this object is included in the argument(s). Argument must be any object which responds to #include? or optionally, multiple arguments can be passed in. Usage:

characters = ["Konata", "Kagami", "Tsukasa"]
"Konata".in?(characters) # => true

character = "Konata"
character.in?("Konata", "Kagami", "Tsukasa") # => true

This will throw an ArgumentError if a single argument is passed in and it doesn’t respond to #include?.

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