Run-time initialised static variables

[Dominikus Dittes Scherkl]

On Wednesday, 7 February 2018 at 12:10:38 UTC, dekevin wrote:


> struct ℚ{
>      ℤ num, den; //cannot call constructors on these, since 
> they require gmp_init, which requires runtime code
>      //Default initialiser disabled, since else num=0,den=0

You can use a different default initializer:
       ℤ num = 0, den = 1;

Thus avoiding the bad denominator.