Re: Initialize static members with objects

From:

mzdude <jsanga@cox.net>

Newsgroups:

comp.lang.c++

Date:

Wed, 4 Feb 2009 13:40:35 -0800 (PST)

Message-ID:

<f90ac07d-46c7-4f36-b52d-55eca3880c23@k1g2000prb.googlegroups.com>

On Feb 4, 4:16 pm, Johannes Bauer <dfnsonfsdu...@gmx.de> wrote:

Hello group,

I'm changing some code from C-style to STL-C++. In the old code,
something along the lines of this is used:

struct foo {
        int x, y;

};

class moo {
        private:
                const foo[] foos;

};

and then in a cpp-file:

const foo[] moo::foos = {
        { 12, 14 },
        { 99, 3 },
        { 1, 2 },
        { 0 },

};

Now I'd like to change that to

class moo {
        private:
                const std::set<foo> foos;

};

and init that like the above C-style declaration. Is that possible? If
so, how?

this should work

#include <set>

struct foo
{
   int x;
   int y;

   foo(int x_, int y_)
      : x(x_)
      , y(y_)
   {}

};

struct ByX : public
   std::binary_function<
      foo const &,
      foo const &,
      bool>
{
   result_type operator()(
      first_argument_type lhs,
      second_argument_type rhs)
   { return lhs.x < rhs.x; }
};

typedef std::set<foo,ByX> FooSet;

FooSet InitTheSet()
{
   FooSet fs;
   fs.insert(foo(1,2));
   fs.insert(foo(3,4));
   return fs;
}

struct moo
{
   static FooSet foos;
};

FooSet moo::foos = InitTheSet();