No named parameters in Ruby?

Question

This is so simple that I can\'t believe it caught me.

def meth(id, options = \"options\", scope = \"scope\")
  puts options
end

meth(1, scope = \"meh\")

-&         


        

Answer 1

Although named parameters are not supported by the Ruby language, you can simulate them by passing your function arguments through a hash. For example:

def meth(id, parameters = {})
  options = parameters["options"] || "options"
  scope = parameters["scope"] || "scope"

  puts options
end

Which can be used as follows:

meth(1, scope: "meh")

Your existing code simply assigns a varaible, then passes that variable to your function. For more information see: http://deepfall.blogspot.com/2008/08/named-parameters-in-ruby.html.