Function template if_
boost::log::expressions::if_
 
Synopsis
template<typename CondT> unspecified if_(CondT const & cond);
Description
The function returns a conditional formatter generator object. The generator provides operator[] that can be used to construct the actual formatter. The formatter must participate in a streaming expression.
| Parameters: | 
| cond
 | A filter expression that will be used as the condition  |  |