Thread: object in bool context

There are several ways of doing this, but some ways are better than others. This article explains the differences between the different methods, and why some are better than others.

Oh My GOD!
I didn't even know about

Code:

operator bool() { ... }

:shock:
And I experimented with

Code:

operator int() { ... }

This also worked fine.
Wow! Thanks!

Wow!
All of this works fine! And I never knew it!

Code:

#include <iostream>

using namespace std;

class Cool
{
  bool bval;
  int ival;
  const char* pval;
public:
  operator bool() { return bval; }
  operator int() { return ival; }
  operator const char*() { return pval; }

  Cool& operator =(bool b) { bval = b; return *this; }
  Cool& operator =(int i) { ival = i; return *this; }
  Cool& operator =(const char* p) { pval = p; return *this; }
};

int main(int argc, char** argv)
{
  Cool val;
  val = false;
  cout << boolalpha << static_cast<bool>(val) << endl;
  val = 55555;
  cout << static_cast<int>(val) << endl;
  val = "Amazing!";
  cout << static_cast<const char*>(val) << endl;
  return 0;
}

Ok CornedBee.
I was just excited about this new (for me) feature of C++
I will not abuse this feature. I was just testing ...