<p>
Channel communication is the main method of synchronization
between goroutines.  Each send on a particular channel
is matched to a corresponding receive from that channel,
usually in a different goroutine.
</p>

<p class="rule">
A send on a channel is synchronized before the completion of the
corresponding receive from that channel.
</p>

<p>
This program:
</p>

<pre>
var c = make(chan int, 10)

	<li>
	Struct values are comparable if all their fields are comparable.
	Two struct values are equal if their corresponding
	non-<a href="#Blank_identifier">blank</a> fields are equal.
	</li>

	<li>
	Array values are comparable if values of the array element type are comparable.
	Two array values are equal if their corresponding elements are equal.
	</li>
</ul>

<p>

The type parameter names do not need to match their corresponding parameter names in the
receiver base type definition, and all non-blank parameter names must be unique in the
receiver parameter section and the method signature.
The receiver type parameter constraints are implied by the receiver base type definition:
corresponding type parameters have corresponding constraints.
</p>

<pre>
type Pair[A, B any] struct {