def f(params,*args)
# elements to be assigned to splat parameter
splat = args.count - params.count + 1
# will throw an error if splat < 0 as that means not enough inputs given
params.map{ |p|
[ p[1] , ( p.first == :rest ? args.shift(splat) : args.shift ) ]
}
end
Examples
def splatter(x,*y,z)
# some code
end
f(method(:splatter).parameters, 1,2,3,4)
#=>[[:x, 1], [:y, [2, 3]], [:z, 4]]
def splatter(x,y,*z)
# some code
end
f(method(:splatter).parameters, 1,2,3,4)
# => [[:x, 1], [:y, 2], [:z, [3, 4]]]
def splatter(x,*z)
# some code
end
f(method(:splatter).parameters, 1)
# => [[:x, 1], [:z, []]]