pkg syscall (netbsd-arm64-cgo), const IFT_A12MPPSWITCH = 130
pkg syscall (netbsd-arm64-cgo), const IFT_A12MPPSWITCH ideal-int
pkg syscall (netbsd-arm64-cgo), const IFT_AAL2 = 187
pkg syscall (netbsd-arm64-cgo), const IFT_AAL2 ideal-int
pkg syscall (netbsd-arm64-cgo), const IFT_AAL5 = 49
pkg syscall (netbsd-arm64-cgo), const IFT_AAL5 ideal-int
pkg syscall (netbsd-arm64-cgo), const IFT_ADSL = 94

pkg syscall (darwin-arm64), type Flock_t struct, Type int16
pkg syscall (darwin-arm64), type Flock_t struct, Whence int16
pkg syscall (darwin-arm64), type Fsid struct
pkg syscall (darwin-arm64), type Fsid struct, Val [2]int32
pkg syscall (darwin-arm64), type Fstore_t struct
pkg syscall (darwin-arm64), type Fstore_t struct, Bytesalloc int64
pkg syscall (darwin-arm64), type Fstore_t struct, Flags uint32

	// type of s is string
	// s == a[i]
	g(i, s)
}

var key string
var val interface{}  // element type of m is assignable to val
m := map[string]int{"mon":0, "tue":1, "wed":2, "thu":3, "fri":4, "sat":5, "sun":6}
for key, val = range m {
	h(key, val)
}
// key == last map key encountered in iteration
// val == map[key]

var ch chan Work = producer()
for w := range ch {
	doWork(w)
}