lass="mdzsyn-coresym">if</span> (<span class="mdzsyn-coresym">&gt;</span> (<span class="mdzsyn-coresym">math/random</span>) <span class="mdzsyn-number">0.42</span>)
    (<span class="mdzsyn-coresym">error</span> <span class="mdzsyn-string">"Good luck"</span>)
    <span class="mdzsyn-string">"Bad luck"</span>))</code></pre>
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