klyn.ULong.operator-=
method
public native static operator-=( readonly a as ULong, readonly b as ULong ) as Void
Description

Subtracts b from a in place.

Parameters
ParameterDescription
aMutable target value.
bValue to subtract.
Example
value = ULong(10)
value -= ULong(3)
assert value == ULong(7)