> Frankly I don’t understand the criticism; I don’t care if I get a compiler error during template evaluation or during compilation or during linkage, a compile

> Frankly I don’t understand the criticism; I don’t care if I get a compiler error during template evaluation or during compilation or during linkage, a compiler error is a compiler error. You might want to consider a setup where the library author is not the same person as the library user. Don't you think it's important that the former sees and not the latter? That's why linker errors and compiler errors and template errors are not equal. Also, if you make an error in a template or its instantiation you might not even get an error but an infinite (i.e., maybe aborted) computation. If you don't see the difference between these things, I cannot help you.