Angle.opOpAssign

The +, -, +=, and -= operators all work on the angles too.

Angle opOpAssign(Angle rhs)
struct Angle
pure @nogc nothrow @safe
Angle
opOpAssign
(
string op : "+"
)
(
const Angle rhs
)
Angle opOpAssign(Angle rhs)

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arsd color Angle functions