// instead of [token.QUO]; the result is guaranteed to be [Int] in this case.
// Division by zero leads to a run-time panic.
func BinaryOp(x_ Value, op token.Token, y_ Value) Value {
	x, y := match(x_, y_)

	switch x := x.(type) {
	case unknownVal:
		return x

	case boolVal:
		y := y.(boolVal)
		switch op {
		case token.LAND:
			return x && y

Pù@A V]¥r² Ñ»>Lq]ò¦tuy^C^ï[ª}yåP°iÕ¢\GDyqñFenc$†ãúþ3{r8ôsE]c@锾GZì„LGo[ït¾ÖG@~ûAiDq]p¼~ïgAg\I Hq}vrglWÜmh¾@eÌô=U_òc aR KwÜP° ÖWKC\ï²#ñl[Xmª² qÎ EnV»¦lol†|»V}P{~uwjƦyzì:ÊbopUß|Quj¦¦ìõÊvyC:7eV3« ùÛüæˆ vãÏÅve„ spqnAtorc² 3rˆ½ }@mMûj[oGnvW¾¼q{Üb¢uª˜÷]X_}ß_®ªñNŠ„ªJÖy~eÕ€ZKp²1Sx 9 WirDIp2¬'KeŽ/ cò=9¢+~ûÕ{\Iˆ UDï¾5ÚK\BemQ»84N@RM–ƒ1Sqj¬yy1DaoÕ½e_xUs©lû~Al1w@mJmV]ñZK1MsdoïZPY»i~ÿ ‹Vo·Ca¸w`M¸V^ol!¦pyÖ:íU\w¾gy£Ptoˆ»&ê÷åMWGpX{V]¥¦þÀú%µ»†0W÷At~ Ù²˜~mai}Qïxpmh£ÔÖ Ï ð ÷ ,{h\/?ãòcˆcãï÷QlF Zs¼ûXsVãtf€tzk¸~E\ïSBºO^...