Richard Clamp 2ac5d96852 Fix compatibility with boost 1.56+ ... In boost 1.56 the optional library is no longer happy with the implicit conversion from boost::optional<std::string> to bool, so we get the following errors: valijson/include/valijson/schema.hpp:177:16: error: no viable conversion from 'const boost::optional<std::string>' to 'bool' return id; ^~ valijson/include/valijson/schema.hpp:188:16: error: no viable conversion from 'const boost::optional<std::string>' to 'bool' return title; ^~~~~ 2 errors generated. Here we explicitly test against boost::none instead.		2014-11-26 13:54:05 +00:00
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valijson	Fix compatibility with boost 1.56+	2014-11-26 13:54:05 +00:00