I've avoided #pragma once because of reports that it slows down gcc/g++: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58770 https://gcc.gnu.org/bugzilla/show_bu

I've avoided #pragma once because of reports that it slows down gcc/g++: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58770 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58770 But given that I haven't seen any mention of that issue in other comments, I wonder if it really is an issue.