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doc/go1.18: add net/netip

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Updates #46518

Change-Id: Iefc2fec93becc7b36ba2b933ae79f7c9424317fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/360634
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Brad Fitzpatrick 2021-11-01 22:25:55 -07:00
parent 4633b2db4b
commit c1ea3395a6
1 changed files with 23 additions and 0 deletions
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@ -123,10 +123,33 @@ Do not send CLs removing the interior tags from such phrases.
<h2 id="library">Core library</h2>
<h3>TODO</h3>
<p>
TODO: complete this section
</p>
<h3 id="netip">New <code>net/netip</code> package</h3>
<p>
The new <a href="/pkg/net/netip/"><code>net/netip</code></a>
package defines a new IP address type, <a href="/pkg/net/netip/#Addr"><code>Addr</code></a>
that's a small, comparable, value type. Compared to the existing
<a href="/pkg/net/#IP"><code>net.IP</code></a> type, the <code>netip.Addr</code> type takes less
memory, is immutable, and is comparable so it supports <code>==</code>
and can be used as a map key.
</p>
<p>
In addition to <code>Addr</code>, the package defines
<a href="/pkg/net/netip/#AddrPort"><code>AddrPort</code></a>, representing
an IP and port, and
<a href="/pkg/net/netip/#Prefix"><code>Prefix</code></a>, representing
a network CIDR prefix.
</p>
<p>
The <code>net</code> package now has methods to send and receive UDP packets
using <code>netip.Addr</code> values instead of the relatively heavy
<code>*net.UDPAddr</code> values.
</p>
<h3 id="minor_library_changes">Minor changes to the library</h3>
<p>