Control Parameter

Introduction

Control Parameter is a special case of Control Couple

Example

A simple example would be the "quoted" parameter in the following method:

def write(quoted)
  if quoted
    write_quoted @value
  else
    write_unquoted @value
  end
end

Fixing those problems is out of the scope of this document but an easy solution could be to remove the "write" method alltogether and to move the calls to "write_quoted" / "write_unquoted" in the initial caller of "write".

Current Support in reek

reek warns about control coupling when a method parameter or block parameter is the tested value in a conditional statement.

Configuration

Control Couple supports the Basic Smell Options.