const native arrays at compile time

12 Jul 2012

      Hello,
I have a number of questions, some of which are boost specific.

1. const std::string cols[] = { "col1", "col2", "col3" };
Is the const native array cols completely a compile-time construct or are
std::string objects constructed at runtime?
I would guess the latter?

2. const char const* cols[] = { "col1", "col2", "col3" };
This on the other hand would be pure compile time?

3. 
struct S1 {
const char const* cols[]  = { "col1", "col2", "col3" };
};
struct S2 {
const char const* cols[]  = { "colx", "coly", "coly" };
};

template <typename T>  /// T is either S1 or S2
struct S {

  const char const* col1s[]  = { "othercol", /// elements of T::cols  }; 
};

Is there a way to build col1s at compile time?

MM

Hicham Mouline

Nat Linden

MM

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