<p dir="auto">This doesn't parse in 0.3.0, and I'm not sure it's entirely-documented syntax on release-0.3 at the moment. There was a backport somewhere to make it parse, but it looks like there's a bug.</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="  | | |_| | | | (_| |  |  Version 0.3.7-pre+15 (2015-03-02 23:43 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit 0f0b136* (7 days old release-0.3)
|__/                   |  x86_64-linux-gnu

julia&gt; [1, 2, 3, 4;] == [3, 2, 1, 4]
true"><pre class="notranslate"><code class="notranslate">  | | |_| | | | (_| |  |  Version 0.3.7-pre+15 (2015-03-02 23:43 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit 0f0b136* (7 days old release-0.3)
|__/                   |  x86_64-linux-gnu

julia&gt; [1, 2, 3, 4;] == [3, 2, 1, 4]
true
</code></pre></div>
<p dir="auto">On <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/JuliaLang/julia/commit/beb54861478f70e855f1a84fe49dc198620c102e/hovercard" href="https://github.com/JuliaLang/julia/commit/beb54861478f70e855f1a84fe49dc198620c102e"><tt>beb5486</tt></a>:</p>
<div class="highlight highlight-source-julia notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="julia&gt; [1,2,3;]
3-element Array{Int64,1}:
 2
 1
 3

julia&gt; [1,2,3,4;]
4-element Array{Int64,1}:
 3
 2
 1
 4

julia&gt; [1,2;]
2-element Array{Int64,1}:
 1
 2"><pre class="notranslate">julia<span class="pl-k">&gt;</span> [<span class="pl-c1">1</span>,<span class="pl-c1">2</span>,<span class="pl-c1">3</span>;]
<span class="pl-c1">3</span><span class="pl-k">-</span>element Array{Int64,<span class="pl-c1">1</span>}<span class="pl-k">:</span>
 <span class="pl-c1">2</span>
 <span class="pl-c1">1</span>
 <span class="pl-c1">3</span>

julia<span class="pl-k">&gt;</span> [<span class="pl-c1">1</span>,<span class="pl-c1">2</span>,<span class="pl-c1">3</span>,<span class="pl-c1">4</span>;]
<span class="pl-c1">4</span><span class="pl-k">-</span>element Array{Int64,<span class="pl-c1">1</span>}<span class="pl-k">:</span>
 <span class="pl-c1">3</span>
 <span class="pl-c1">2</span>
 <span class="pl-c1">1</span>
 <span class="pl-c1">4</span>

julia<span class="pl-k">&gt;</span> [<span class="pl-c1">1</span>,<span class="pl-c1">2</span>;]
<span class="pl-c1">2</span><span class="pl-k">-</span>element Array{Int64,<span class="pl-c1">1</span>}<span class="pl-k">:</span>
 <span class="pl-c1">1</span>
 <span class="pl-c1">2</span></pre></div>
<p dir="auto">This syntax is not supported on v0.3 (probably because of <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="42098881" data-permission-text="Title is private" data-url="https://github.com/JuliaLang/julia/issues/8250" data-hovercard-type="pull_request" data-hovercard-url="/JuliaLang/julia/pull/8250/hovercard" href="https://github.com/JuliaLang/julia/pull/8250">#8250</a>). I would expect this to behave the same as, e.g. <code class="notranslate">[1,2,3]</code>, but maybe that's naive. I definitely wasn't expecting this, though.</p>