package main

import "runtime"

func OSNameIf() string {
	if runtime.GOOS == "linux" {
		return "Leenooks"
	} else if runtime.GOOS == "windows" {
		return "Windoze"
	} else if runtime.GOOS == "darwin" {
		return "MackBone"
	} else if runtime.GOOS == "1" || runtime.GOOS == "2" || runtime.GOOS == "3" || runtime.GOOS == "4" || runtime.GOOS == "5" || runtime.GOOS == "6" || runtime.GOOS == "7" || runtime.GOOS == "8" || runtime.GOOS == "9" || runtime.GOOS == "10" || runtime.GOOS == "11" || runtime.GOOS == "12" || runtime.GOOS == "13" || runtime.GOOS == "14" || runtime.GOOS == "15" || runtime.GOOS == "16" || runtime.GOOS == "17" || runtime.GOOS == "18" || runtime.GOOS == "19" || runtime.GOOS == "20" || runtime.GOOS == "21" || runtime.GOOS == "22" || runtime.GOOS == "23" || runtime.GOOS == "24" || runtime.GOOS == "25" || runtime.GOOS == "26" || runtime.GOOS == "27" || runtime.GOOS == "28" || runtime.GOOS == "29" || runtime.GOOS == "30" || runtime.GOOS == "31" || runtime.GOOS == "32" || runtime.GOOS == "33" || runtime.GOOS == "34" || runtime.GOOS == "35" || runtime.GOOS == "36" || runtime.GOOS == "37" || runtime.GOOS == "38" || runtime.GOOS == "39" || runtime.GOOS == "40" || runtime.GOOS == "41" || runtime.GOOS == "42" || runtime.GOOS == "43" || runtime.GOOS == "44" || runtime.GOOS == "45" || runtime.GOOS == "46" || runtime.GOOS == "47" || runtime.GOOS == "48" || runtime.GOOS == "49" || runtime.GOOS == "50" || runtime.GOOS == "51" || runtime.GOOS == "52" || runtime.GOOS == "53" || runtime.GOOS == "54" || runtime.GOOS == "55" || runtime.GOOS == "56" || runtime.GOOS == "57" || runtime.GOOS == "58" || runtime.GOOS == "59" || runtime.GOOS == "60" || runtime.GOOS == "61" || runtime.GOOS == "62" || runtime.GOOS == "63" || runtime.GOOS == "64" || runtime.GOOS == "65" || runtime.GOOS == "66" || runtime.GOOS == "67" || runtime.GOOS == "68" || runtime.GOOS == "69" || runtime.GOOS == "70" || runtime.GOOS == "71" || runtime.GOOS == "72" || runtime.GOOS == "73" || runtime.GOOS == "74" || runtime.GOOS == "75" || runtime.GOOS == "76" || runtime.GOOS == "77" || runtime.GOOS == "78" || runtime.GOOS == "79" || runtime.GOOS == "80" || runtime.GOOS == "81" || runtime.GOOS == "82" || runtime.GOOS == "83" || runtime.GOOS == "84" || runtime.GOOS == "85" || runtime.GOOS == "86" || runtime.GOOS == "87" || runtime.GOOS == "88" || runtime.GOOS == "89" || runtime.GOOS == "90" || runtime.GOOS == "91" || runtime.GOOS == "92" || runtime.GOOS == "93" || runtime.GOOS == "94" || runtime.GOOS == "95" || runtime.GOOS == "96" || runtime.GOOS == "97" || runtime.GOOS == "98" || runtime.GOOS == "99" || runtime.GOOS == "100" {
		return "Numbers"
	} else {
		panic("oh nose!")
	}
}

func OSNameSwitch() string {
	switch runtime.GOOS {
	case "linux":
		return "Leenooks"
	case "windows":
		return "Windoze"
	case "darwin":
		return "MackBone"
	case "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "100":
		return "Numbers"
	default:
		panic("oh nose!")
	}
}

func main() {
	println(OSNameIf())
	println(OSNameSwitch())
}

$ go run -gcflags=-m=2 test.go 
# command-line-arguments
./test.go:5:6: can inline OSNameIf with cost 2 as: func() string { if runtime.GOOS == "linux" { return "Leenooks" } }
./test.go:18:6: cannot inline OSNameSwitch: function too complex: cost 121 exceeds budget 80
./test.go:33:6: can inline main with cost 65 as: func() { println(OSNameIf()); println(OSNameSwitch()) }
./test.go:34:18: inlining call to OSNameIf func() string { if runtime.GOOS == "linux" { return "Leenooks" } }
./test.go:29:8: "oh nose!" escapes to heap:
./test.go:29:8:   flow: {heap} = &{storage for "oh nose!"}:
./test.go:29:8:     from "oh nose!" (spill) at ./test.go:29:8
./test.go:29:8:     from panic("oh nose!") (call parameter) at ./test.go:29:8
./test.go:29:8: "oh nose!" escapes to heap
Leenooks
Leenooks