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dynamic_arity_validation

⚖️ Enforcing Arity and Argument Types at Runtime​

Lambdas enforce arity by default, but you can add runtime type checks inside procs for stricter contracts. Combine #lambda with custom validators to fail early on unexpected inputs, improving reliability in critical code paths.

type_checked = lambda do |a, b|
  raise TypeError, "Expected Integer" unless a.is_a?(Integer) && b.is_a?(Integer)
  a * b
end

puts type_checked.call(3, 4)    # => 12
puts type_checked.call("3", 4) # => TypeError: Expected Integer

Wrap these in helper methods to generate families of typed lambdas dynamically.