Add New Section To Functions - Prefer Exceptions to Returning Error Codes

[ofirbarak]

Based on "Clean Code" book, I find this section very useful. Use exceptions to indicate on error occurred instead of returning error codes, it complicates the caller function's code.

// bad

int func1(){
  if (some condition)
    return -1; // Error
  return 0; // Ok
}

void func2(){
  if (func1() == 0)
    return;
}

// good

void func1(){
  if (some condition)
    throw new Exception(); // Error
  return; // Ok
}

void func2(){
  try
  {
     func1();
  } catch (Exception ex) {
    // Error
  }
}