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go 1: add a description of the os error changes.

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I'm sure I wrote these before but they've disappeared.

R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/5673100
This commit is contained in:
Rob Pike 2012-02-19 14:15:26 +11:00
parent fc0dc04095
commit c3ef198020
2 changed files with 63 additions and 23 deletions
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44
doc/go1.html
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@ -7,7 +7,7 @@
-->
<!-- Center the tables, and disable the 1995 3D borders -->
<!-- Center the tables, and disable the 1995-era 3D borders -->
<style>
table { margin-left: auto; margin-right: auto; border-style: none; }
hr { border-style: none; border-top: 1px solid black; }
@ -889,7 +889,7 @@ Running <code>go fix</code> will update calls that assign the error to _.
Calls that aren't fixed will be caught by the compiler and must be updated by hand.
</p>
<h3 id="bufio">The compress/flate, compress/gzip and compress/zlib packages</h3>
<h3 id="compress">The compress/flate, compress/gzip and compress/zlib packages</h3>
<p>
In Go 1, the <code>NewWriterXxx</code> functions in
@ -1418,24 +1418,44 @@ The semantic change makes it difficult for the fix tool to update automatically.
<h3 id="os">The os package</h3>
<p>The <code>Time</code> function has been removed; callers should use
<p>
The <code>Time</code> function has been removed; callers should use
the <a href="/pkg/time/#Time"><code>Time</code></a> type from the
<code>time</code> package.</p>
<code>time</code> package.
</p>
<p>The <code>Exec</code> function has been removed; callers should use
<code>Exec</code> from the <code>syscall</code> package, where available.</p>
<p>
The <code>Exec</code> function has been removed; callers should use
<code>Exec</code> from the <code>syscall</code> package, where available.
</p>
<p>The <code>ShellExpand</code> function has been renamed to <a
href="/pkg/os/#ExpandEnv"><code>ExpandEnv</code></a>.</p>
<p>
The <code>ShellExpand</code> function has been renamed to <a
href="/pkg/os/#ExpandEnv"><code>ExpandEnv</code></a>.
</p>
<p>The <a href="/pkg/os/#NewFile"><code>NewFile</code></a> function
<p>
The <a href="/pkg/os/#NewFile"><code>NewFile</code></a> function
now takes a <code>uintptr</code> fd, instead of an <code>int</code>.
The <a href="/pkg/os/#File.Fd"><code>Fd</code></a> method on files now
also returns a <code>uintptr</code>.</p>
also returns a <code>uintptr</code>.
</p>
<p>
There are no longer error constants such as <code>EINVAL</code>
in the <code>os</code> package, since the set of values varied with
the underlying operating system. There are new portable functions like
<a href="/pkg/os/#IsPermission"><code>IsPermission</code></a>
to test common error properties, plus a few new error values
with more Go-like names, such as
<a href="/pkg/os/#ErrPermission"><code>ErrPermission</code></a>
and
<a href="/pkg/os/#ErrNoEnv"><code>ErrNoEnv</code></a>.
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
Affected code will be caught by the compiler and must be updated by hand.
</p>
<h4 id="os_fileinfo">The os.FileInfo type</h4>
@ -1572,7 +1592,7 @@ will need to be updated by hand.
The compiler will catch code using the old interface.
</p>
<h3 id="os/signal">The os/signal package</h3>
<h3 id="os_signal">The os/signal package</h3>
<p>
The <code>os/signal</code> package in Go 1 replaces the

42
doc/go1.tmpl
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@ -793,7 +793,7 @@ Running <code>go fix</code> will update calls that assign the error to _.
Calls that aren't fixed will be caught by the compiler and must be updated by hand.
</p>
<h3 id="bufio">The compress/flate, compress/gzip and compress/zlib packages</h3>
<h3 id="compress">The compress/flate, compress/gzip and compress/zlib packages</h3>
<p>
In Go 1, the <code>NewWriterXxx</code> functions in
@ -1321,24 +1321,44 @@ The semantic change makes it difficult for the fix tool to update automatically.
<h3 id="os">The os package</h3>
<p>The <code>Time</code> function has been removed; callers should use
<p>
The <code>Time</code> function has been removed; callers should use
the <a href="/pkg/time/#Time"><code>Time</code></a> type from the
<code>time</code> package.</p>
<code>time</code> package.
</p>
<p>The <code>Exec</code> function has been removed; callers should use
<code>Exec</code> from the <code>syscall</code> package, where available.</p>
<p>
The <code>Exec</code> function has been removed; callers should use
<code>Exec</code> from the <code>syscall</code> package, where available.
</p>
<p>The <code>ShellExpand</code> function has been renamed to <a
href="/pkg/os/#ExpandEnv"><code>ExpandEnv</code></a>.</p>
<p>
The <code>ShellExpand</code> function has been renamed to <a
href="/pkg/os/#ExpandEnv"><code>ExpandEnv</code></a>.
</p>
<p>The <a href="/pkg/os/#NewFile"><code>NewFile</code></a> function
<p>
The <a href="/pkg/os/#NewFile"><code>NewFile</code></a> function
now takes a <code>uintptr</code> fd, instead of an <code>int</code>.
The <a href="/pkg/os/#File.Fd"><code>Fd</code></a> method on files now
also returns a <code>uintptr</code>.</p>
also returns a <code>uintptr</code>.
</p>
<p>
There are no longer error constants such as <code>EINVAL</code>
in the <code>os</code> package, since the set of values varied with
the underlying operating system. There are new portable functions like
<a href="/pkg/os/#IsPermission"><code>IsPermission</code></a>
to test common error properties, plus a few new error values
with more Go-like names, such as
<a href="/pkg/os/#ErrPermission"><code>ErrPermission</code></a>
and
<a href="/pkg/os/#ErrNoEnv"><code>ErrNoEnv</code></a>.
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
Affected code will be caught by the compiler and must be updated by hand.
</p>
<h4 id="os_fileinfo">The os.FileInfo type</h4>
@ -1457,7 +1477,7 @@ will need to be updated by hand.
The compiler will catch code using the old interface.
</p>
<h3 id="os/signal">The os/signal package</h3>
<h3 id="os_signal">The os/signal package</h3>
<p>
The <code>os/signal</code> package in Go 1 replaces the