31 lines
1.1 KiB
Plaintext
31 lines
1.1 KiB
Plaintext
[/==============================================================================
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Copyright (C) 2001-2011 Joel de Guzman
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Copyright (C) 2001-2011 Hartmut Kaiser
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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===============================================================================/]
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[section Number List - stuffing numbers into a std::vector]
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This sample demonstrates a parser for a comma separated list of numbers. The
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numbers are inserted in a vector using phoenix.
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[import ../../example/qi/num_list2.cpp]
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[tutorial_numlist2]
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The full cpp file for this example can be found here: [@../../example/qi/num_list2.cpp]
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This, again, is the same parser as before. This time, instead of summing up the
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numbers, we stuff them in a `std::vector`. `push_back` is supplied by
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__phoenix__. The expression:
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push_back(ref(v), _1)
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appends the parsed number. Like before, `_1` is a __phoenix__ placeholder for
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the parsed result attribute. Also, like before, `ref(v)` tells __phoenix__ that
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`v`, the `std::vector`, is a mutable reference.
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[endsect]
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