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symbol_to_proc

✨ Converting Methods to Procs with Symbol#to_proc​

Ruby's Symbol#to_proc shorthand (&:method_name) makes mapping and selection more concise. It converts a symbol into a proc that calls the named method on each element. This simplifies common enumerations.

names = ["alice", "bob", "carol"]
# Using map with a block
upcased = names.map { |name| name.upcase }
# Using Symbol#to_proc shorthand
upcased = names.map(&:upcase)

# Selecting objects by a boolean method
evens = [1,2,3,4,5].select(&:even?)  #=> [2,4]