Compile-Time RNG

[Joseph Rushton Wakeling]

On Tuesday, 5 March 2019 at 22:57:31 UTC, Stefan Koch wrote:
> it's easy. you use the time_stamp at compilation which is 
> expressed as a certain lexer variable. you parse that at ctfe 
> and use it as the seed for another random number gen.

Depending on the use case, that might be problematic.  Consider 
two different compilation units issued in the same second (so 
same timestamp).  Both use the CTFE RNG, and because their seed 
is the same, so is the pseudo-random sequence.