I've started trying out the C++11 standard and i found this question which describes how to call your ctor from another ctor in the same class to avoid having a init method or the like. Now i'm trying the same thing with code that looks like this:

hpp:

class Tokenizer
{
public:
  Tokenizer();
  Tokenizer(std::stringstream *lines);
  virtual ~Tokenizer() {};
private:
  std::stringstream *lines;
};

cpp:

Tokenizer::Tokenizer()
  : expected('=')
{
}

Tokenizer::Tokenizer(std::stringstream *lines)
  : Tokenizer(),
    lines(lines)
{
}

But this is giving me the error: In constructor ‘config::Tokenizer::Tokenizer(std::stringstream*)’: /path/Tokenizer.cpp:14:20: error: mem-initializer for ‘config::Tokenizer::lines’ follows constructor delegation I've tried moving the Tokenizer() part first and last in the list but that didn't help.

What's the reason behind this and how should i fix it? I've tried moving the lines(lines) to the body with this->lines = lines; instead and it works fine. But i would really like to be able to use the initializer list.

Thanks in advance!