Mat4x4.opIndex - multiple declarations

Function Mat4x4.opIndex

2d index by row, col

ref float opIndex (
  int y,
  int x
) nothrow return @safe;

float opIndex (
  int y,
  int x
) nothrow @safe const;

Function Mat4x4.opIndex

Scalar index by rows then (y*4 + x)

ref float opIndex (
  int index
) nothrow return @safe;

float opIndex (
  int index
) nothrow @safe const;