+ auto i = lower_bound(enabled_channels, chan);
+ if(i!=enabled_channels.end() && *i==chan)
+ enabled_channels.erase(i);
+}
+
+bool Logger::is_channel_enabled(const string &chan) const
+{
+ auto i = lower_bound(enabled_channels, chan);
+ return (i!=enabled_channels.end() && *i==chan);