furry-curry.js

function namedCurry(source_fn, arg_order){

  function receiver( received_values, n_received, defaults ){
    received_values = (received_values || []).slice()
    n_received = n_received || 0

    Object.keys(defaults).forEach(function( input_arg ){
      var value = defaults[ input_arg ]
      var required_index = arg_order.indexOf( input_arg )
      var is_known_argument = required_index > -1
      var existing_value = received_values[required_index]

      if( is_known_argument ){
        if( typeof existing_value == "undefined" ){
          n_received++
        }
        received_values[required_index] = value;
      }

    })

    if( n_received >= arg_order.length ){
      return source_fn.apply(null, received_values )
    } else {
      return receiver.bind( null, received_values, n_received )
    }
  }

  return receiver.bind(null, null, 0)
}