Prev: [ANN] CodeSynthesis XSD 3.3.0 released
Next: ideas for data binding?
From: itaj sherman on 23 May 2010 03:48
On Apr 29, 10:03 pm, DeMarcus <use_my_alias_h...(a)hotmail.com> wrote:
> Hi,
>
> In C++0x, is lambda the most proper way to initialize a std::function
> with a valid function that does nothing?
>
> class SomeClass
> {
> public:
> SomeClass() : fnc_([]{}) {}
>
> private:
> std::function<void()> fnc_;
>
> };
>
> Thanks,
> Daniel
>

It might be, depends on the scope of the module I would consider
defining an empty function in this module to use as default empty
value.

void empty_function() {}

Because []{} might become like a magic number, only worse: I'm not
sure in which cases you could later add:

if( fnc_ == []{} ) {
DebugTrace( "using empty function" );
}

or maybe you would want to change to:

void empty_function()
{
DebugTrace( "empty function" );
}

itaj


--
[ See http://www.gotw.ca/resources/clcm.htm for info about ]
[ comp.lang.c++.moderated. First time posters: Do this! ]

First  |  Prev  | 
Pages: 1 2 3
Prev: [ANN] CodeSynthesis XSD 3.3.0 released
Next: ideas for data binding?