l4m2 questions

• How can I stop Clang from overexpanding nested loops via templates?
• Why does this lambda in C++ include every reference?
• When should I use hypot over sqrtl?
• while(i--) optimization by gcc and clang: why don't they use sub / jnc?
• Is calling a function with local side-effects twice in the same expression undefined behavior?

l4m2 answers