ch.mustBeExported()
			tt := (*chanType)(unsafe.Pointer(ch.typ()))
			if ChanDir(tt.Dir)&SendDir == 0 {
				panic("reflect.Select: SendDir case using recv-only channel")
			}
			rc.ch = ch.pointer()
			rc.typ = toRType(&tt.Type)
			v := c.Send
			if !v.IsValid() {
				panic("reflect.Select: SendDir case missing Send value")
			}
			v.mustBeExported()
			v = v.assignTo("reflect.Select", tt.Elem, nil)

	// check construction and use of type not in binary
	type T string
	crt := ChanOf(RecvDir, TypeOf(T("")))
	cst := ChanOf(SendDir, TypeOf(T("")))

	// check that type already in binary is found
	type T1 int
	checkSameType(t, ChanOf(RecvDir, TypeOf(T1(1))), (<-chan T1)(nil))
	checkSameType(t, ChanOf(SendDir, TypeOf(T1(1))), (chan<- T1)(nil))

	// check String form of ChanDir
	if crt.ChanDir().String() != "<-chan" {

				// should probably start a goroutine to read from req. This best
				// effort select existed before the change to check 'deleted'.
				// But if we know for sure it wasn't deleted and a sender is
				// outstanding, we should probably block on req (in a new
				// goroutine) to get the connection back.
				select {
				default:
				case ret, ok := <-req:
					if ok && ret.conn != nil {

make(chan int, 100)
</pre>

<p>
The capacity, in number of elements, sets the size of the buffer in the channel.
If the capacity is zero or absent, the channel is unbuffered and communication
succeeds only when both a sender and receiver are ready. Otherwise, the channel
is buffered and communication succeeds without blocking if the buffer
is not full (sends) or not empty (receives).
A <code>nil</code> channel is never ready for communication.