Re: In C++0x, shall I delete functions instead of making them private?
On 3/3/10 3:29 PM, DeMarcus wrote:
Hi,
I'm working on a new project using C++0x.
Before I have always made disabled functions private, like this.
class SomeClass
{
public:
SomeClass() {}
private:
// Disable copying.
SomeClass( const SomeClass& );
SomeClass& operator=( const SomeClass& );
};
Is your recommendation to do the following instead?
class SomeClass
{
public:
SomeClass() {}
SomeClass( const SomeClass& ) = delete;
SomeClass& operator=( const SomeClass& ) = delete;
};
My preference, in either version of the language, is a non-copyable base
type, like boost::noncopyable. The non-copyable base approach makes the
client code particularly clean and readable.
/* Library code; do this once. */
class noncopyable_t
{
noncopyable_t( noncopyable_t const& );
noncopyable_t& operator=(noncopyable_t const&);
public:
noncopyable_t( ) { }
};
/* Client code; do this as many times as you want. */
struct some_t
: private noncopyable_t
{
some_t( ) { }
};
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