gistfile1.rb

jakis_odgorny_warunek = "a"

def costam
  for element in list
    if jakis_odgorny_warunek == "a"
      # zrob cos 1
    else
      # zrob cos 2
    end
  end
end


# Ale mozna tak:

jakis_odgorny_warunek = "a"

if jakis_odgorny_warunek == "a"
  def costam
    for element in list
      # zrob cos 1
    end
  end
else
  def costam
    for element in list
      # zrob cos 2
    end
  end  
end