Ruby method with maximum number of parameters

You have several alternatives, depending on how much you want the method to be verbose and strict.

# force max 2 args
def foo(*args)
  raise ArgumentError, "Too many arguments" if args.length > 2
end

# silently ignore other args
def foo(*args)
  one, two = *args
  # use local vars one and two
end

# let the interpreter do its job
def foo(one, two)
end

# let the interpreter do its job
# with defaults
def foo(one, two = "default")
end