pkg syscall (netbsd-arm64), const CLONE_PTRACE = 8192
pkg syscall (netbsd-arm64), const CLONE_PTRACE ideal-int
pkg syscall (netbsd-arm64), const CLONE_SIGHAND = 2048
pkg syscall (netbsd-arm64), const CLONE_SIGHAND ideal-int
pkg syscall (netbsd-arm64), const CLONE_VFORK = 16384
pkg syscall (netbsd-arm64), const CLONE_VFORK ideal-int
pkg syscall (netbsd-arm64), const CLONE_VM = 256
pkg syscall (netbsd-arm64), const CLONE_VM ideal-int

pkg syscall (darwin-arm64), const SYS_CHUD = 185
pkg syscall (darwin-arm64), const SYS_CHUD ideal-int
pkg syscall (darwin-arm64), const SYS_CLOSE = 6
pkg syscall (darwin-arm64), const SYS_CLOSE ideal-int
pkg syscall (darwin-arm64), const SYS_CLOSE_NOCANCEL = 399
pkg syscall (darwin-arm64), const SYS_CLOSE_NOCANCEL ideal-int
pkg syscall (darwin-arm64), const SYS_CONNECT = 98
pkg syscall (darwin-arm64), const SYS_CONNECT ideal-int

</p>


<h3 id="Close">Close</h3>

<p>
For an argument <code>ch</code> with a <a href="#Core_types">core type</a>
that is a <a href="#Channel_types">channel</a>, the built-in function <code>close</code>
records that no more values will be sent on the channel.
It is an error if <code>ch</code> is a receive-only channel.