dynamic_send

🚀 Dynamic Method Invocation with send

Ruby’s send method allows you to call any method by name (symbol or string) at runtime. It’s helpful for delegating or mapping user input to internal methods safely. Use public_send to respect visibility rules if you want to avoid invoking private methods.

class Calculator
  def add(a, b); a + b; end
  def multiply(a, b); a * b; end
end

calc = Calculator.new
operation = :add
puts calc.send(operation, 2, 3)         # => 5
# Or safer:
puts calc.public_send(:multiply, 4, 5)   # => 20