Andrea Fontana:
Is there any counter-indication with this:immutable ubyte[5] stub = x"b8 01 4c cd 21".representation; ?
See: https://issues.dlang.org/show_bug.cgi?id=10454 https://issues.dlang.org/show_bug.cgi?id=5909
Is it a compile time value?
Generally you need module-level values or enums to be sure a value is compile-time. In this case it is probably not.
Bye, bearophile