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doc update

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Harald Hoyer 2018-12-20 16:02:24 +01:00
parent 991a7a0786
commit 188d93a86a
15 changed files with 116 additions and 18 deletions
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tutorial3.html
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@ -140,7 +140,9 @@
<div id="content" class="content">
<main>
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
<a class="header" href="#mapping-errors" id="mapping-errors"><h2>Mapping Errors</h2></a>
<p>Now let's get more rust idiomatic by using <code>.map_err()</code>.</p>
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
use std::error::Error;
use std::result::Result;
@ -445,6 +447,16 @@ fn main() -&gt; Result&lt;(), Box&lt;Error&gt;&gt; {
# }
# }
</code></pre></pre>
<p>If you compare the output to the previous example, you will see,
that:</p>
<pre><code>Error: src/main.rs:19: &quot;func1 error&quot;
</code></pre>
<p>changed to just:</p>
<pre><code>src/main.rs:16: &quot;func1 error&quot;
</code></pre>
<p>This is, because we caught the error of <code>func1()</code> in <code>main()</code> and print it out ourselves.</p>
<p>We can now control, whether to output in <code>Debug</code> or <code>Display</code> mode.
Maybe depending on <code>--debug</code> as a CLI argument.</p>
</main>