According to the docs:
^x bitwise complement is m ^ x with m = "all bits set to 1" for
unsigned x and m = -1 for signed x
It means that ^0
is the same as ~0
in other mainstream languages.
On a two's complement (which most of the programming languages adopt) the value of the complement of zero is -1 (on an signed data type). So this is a way to write:
newStat := stat{min: -1}