class << self

# Calls either a Proc or a Lambda, making sure to never pass more parameters to it than it can receive

#

# @param [Proc] proc the Proc or Lambda to call

# @param [Array<Object>] *params any number of parameters to be passed to the Proc

# @return [Object] the result of the Proc call with the supplied parameters

def call_proc(proc, *params)

# The parameters array for a lambda created from a symbol (&:foo) differs

# from explictly defined procs/lambdas, so we can't deduce the number of

# parameters from the array length (and differs between Ruby 2.x and 3).

# In the case of negative arity -- unlimited/unknown argument count --

# just send the object to act as the method receiver.

if proc.arity.negative?

proc.call(params.first)

else

proc.call(*params.take(proc.parameters.length))

end

end

end