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#rustlings

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(╯°□°）╯︵ snuoɹɥɔo<p>At chapter 6 of <a href="https://rustlings.rust-lang.org/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">rustlings.rust-lang.org/</span><span class="invisible"></span></a> <a href="https://xn--go8h.csa.ba/tags/rust" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rust</span></a> <a href="https://xn--go8h.csa.ba/tags/rustlings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rustlings</span></a></p>
Mo Bitar :ferris:<p>With that, we have a new guide for "Community Exercises" ✨</p><p><a href="https://rustlings.rust-lang.org/community-exercises" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">rustlings.rust-lang.org/commun</span><span class="invisible">ity-exercises</span></a></p><p>You can create your own exercises and let the <a href="https://fosstodon.org/tags/Rustlings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Rustlings</span></a> program manage them 😃</p><p>I have heard that the <a href="https://fosstodon.org/tags/BevyEngine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BevyEngine</span></a> community is thinking about creating some exercises for Bevy beginners 😉</p><p><span class="h-card" translate="no"><a href="https://mastodon.gamedev.place/@alice_i_cecile" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>alice_i_cecile</span></a></span> <span class="h-card" translate="no"><a href="https://hachyderm.io/@chrisbiscardi" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>chrisbiscardi</span></a></span></p>
Mo Bitar :ferris:<p>Launched a new website for <a href="https://fosstodon.org/tags/Rustlings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Rustlings</span></a> 🎉<br><a href="https://rustlings.rust-lang.org" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">rustlings.rust-lang.org</span><span class="invisible"></span></a></p><p>It even has a new link 🔗</p><p>What do you think? Anything missing? 🤔</p><p><a href="https://fosstodon.org/tags/RustLang" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RustLang</span></a></p>
Grégoire Locqueville<p>Ok here's a first question I encountered while working on the <a href="https://mathstodon.xyz/tags/rustlings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rustlings</span></a> :</p><p>When defining a function, what does it mean to put the `mut` keyword in front of the argument's *name* vs. in front the the argument's *type*? E.g. what's the difference between the following two lines:</p><p>```<br>fn some_function(mut some_arg: SomeType) {<br>fn some_function(some_arg: mut SomeType) {<br>```</p><p><a href="https://mathstodon.xyz/tags/rust" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rust</span></a></p>
Feoh<p>I think maybe I need to put <a href="https://oldbytes.space/tags/rustlings" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rustlings</span></a> aside for a bit and read up a bit more.</p><p>I'm hitting the point where I am perma-stumped on some of the exercises.</p><p>Like, I <em>really</em> don't understand map_err or why I would want it. The examples aren't making much sense yet.</p><p>Not giving up, just changing tactics :)</p><p>My latest sticking point:</p><p><a href="https://github.com/rust-lang/rustlings/blob/main/exercises/13_error_handling/errors6.rs" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/rust-lang/rustlings</span><span class="invisible">/blob/main/exercises/13_error_handling/errors6.rs</span></a></p>
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