Determine if note or args is a rest

rest?  note_or_args (number_symbol_or_map)

Given a note or an args map, returns true if it represents a rest and false if otherwise

Introduced in v2.1

Examples

# Example 1 

puts rest? nil





# true

# Example 2 

puts rest? :r





# true

# Example 3 

puts rest? :rest





# true

# Example 4 

puts rest? 60





# false

# Example 5 

puts rest? {}





# false

# Example 6 

puts rest? {note: :rest}





# true

# Example 7 

puts rest? {note: nil}





# true

# Example 8 

puts rest? {note: 50}





# false