template <class FormatString, class T1, ..., class Tn>
int printf(T1 a1, ..., Tn an);
Wrapper of the printf
function of the C library. It takes the format string as a compile-time string, which is an boost::metaparse::string
. It type-checks the arguments based on the format string. When type-checking fails, this function emits a compilation error. When type-checking succeeds, this function calls the printf
function of the C library. This thin wrapper is likely to be inlined in which case it has no runtime overhead compared to using printf
without type-checking.
#include <mpllibs/safe_printf/printf.hpp>
For any s
boost::metaparse::string
and a1
... an
runtime objects:
mpllibs::safe_printf::printf<s>(a1, ..., an)
When the number and types of a1
... an
are correct according to s
, the format string, it is equivalent to
std::printf(boost::mpl::c_str<s>::type::value, a1, ..., an)
otherwise it is a compilation error.
mpllibs::safe_printf::printf<BOOST_METAPARSE_STRING("%d %d\n")>(11, 13);
Copyright Abel Sinkovics (abel at elte dot hu) 2011. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt