ceph/src/boost/libs/mpl/doc/src/refmanual/LIMIT_STRING_SIZE.rst

   1 .. Macros/Configuration//BOOST_MPL_LIMIT_STRING_SIZE |65
   2
   3 BOOST_MPL_LIMIT_STRING_SIZE
   4 ===========================
   5
   6 Synopsis
   7 --------
   8
   9 .. parsed-literal::
  10
  11     #if !defined(BOOST_MPL_LIMIT_STRING_SIZE)
  12     #   define BOOST_MPL_LIMIT_STRING_SIZE \\
  13             |idic| \\
  14     /\*\*/
  15     #endif
  16
  17
  18 Description
  19 -----------
  20
  21 ``BOOST_MPL_LIMIT_STRING_SIZE`` is an overridable configuration macro regulating
  22 the maximum arity of the ``string``\ 's |variadic forms|. In this
  23 implementation of the library, ``BOOST_MPL_LIMIT_STRING_SIZE`` has a default value
  24 of 32. To override the default limit, define ``BOOST_MPL_LIMIT_STRING_SIZE`` to
  25 the desired maximum arity before including any library header.
  26
  27
  28 Example
  29 -------
  30
  31 .. parsed-literal::
  32
  33     #define BOOST_MPL_LIMIT_STRING_SIZE 8
  34     ``#``\ include <boost/mpl/string.hpp>
  35
  36     using namespace boost::mpl;
  37
  38     typedef string<'a'> s_1;
  39     typedef string<'abcd','efgh'> s_8;
  40     // typedef string<'abcd','efgh','i'> s_9; // error!
  41
  42
  43 See also
  44 --------
  45
  46 |Configuration|, |BOOST_MPL_LIMIT_VECTOR_SIZE|
  47
  48
  49 .. copyright:: Copyright ©  2009 Eric Niebler
  50    Distributed under the Boost Software License, Version 1.0. (See accompanying
  51    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)