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+ add specialization for bool in to_expression_string()

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This commit is contained in:
Artem Pavlenko 2010-03-24 18:01:45 +00:00
parent 304538bcf3
commit 666ff418dc
1 changed files with 5 additions and 0 deletions
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5
include/mapnik/value.hpp
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@ -611,6 +611,11 @@ struct to_expression_string : public boost::static_visitor<std::string>
return ss.str();
}
std::string operator() (bool val) const
{
return val ? "true":"false";
}
std::string operator() (value_null const& val) const
{
boost::ignore_unused_variable_warning(val);