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hash_to_proc

🔗 Converting a Hash to a Proc for Flexible Calls​

Ruby 2.6+ lets you use Hash#to_proc to expand key/value pairs into method arguments. This is great for injecting defaults or constructing keyword args dynamically.

def greet(name:, greeting:)
  "#{greeting}, #{name}!"
end

options = { name: 'Sam', greeting: 'Hello' }

# Expand options via to_proc
[options].map(&Hash.to_proc(:greet))
# => ["Hello, Sam!"]

# Or with kwargs directly
greet(**options)
# => "Hello, Sam!"