On Tue, 09 Mar 2010 09:38:32 -0800, Steven Watanabe wrote:

Alex Lamaison wrote:

...

I'd like to use basic_path as a function parameter so that it works correctly whether a wide or narrow string is passed.

template<typename T> void func(basic_path<T> file) { do thing to file }

func("myfile"); func(L"myfile");

Try specializing for char and wchar_t instead of char* and wchar_t*. You could also just use

template void func(const basic_bath& file);

Thanks Steven. I tried both of these but still no luck. For this definition: template inline hmodule load_library( const boost::filesystem::basic_path& library_path) {} called like this: load_library("kernel32.dll"); load_library(L"kernel32.dll"); I get this error (namespaces stripped): "error C2784: 'hmodule load_library(const basic_path &)' : could not deduce template argument for 'const basic_path &' from 'const char [13]'" and similar for wchar_t[13]. What can I do to help its powers of deduction? Alex P.S. Sorry for all the dupes; GMANE issues :(

On Tue, 09 Mar 2010 09:44:46 -0800, Steven Watanabe wrote:

Alex Lamaison wrote:

...

template<typename T> void func(basic_path<T> file) { do thing to file }

func("myfile"); func(L"myfile");

There's no way to get the compiler to deduce T, since the argument types are "const char[...]" and "const wchar_t[...]". If you want this, you'll have to either overload for pointers or do something like

template<typename T> void func_impl(basic_path<T> file);

void func(path file) { func_impl(file); } void func(wpath file) { func_impl(file); }

Thanks Steven. This is what I'll do. Looking forward to filesystem v3 which should fix this! Alex