ELEC60015-HLP-CW/docs/reference/global-helpers.html

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<h1>Helpers</h1>
<p>
<span>Namespace: global</span><br />
</p>
<div class="xmldoc">
</div>
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<h3>Functions and values</h3>
<table class="table table-bordered member-list">
<thead>
<tr><td>Function or value</td><td>Description</td></tr>
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<td class="member-name">
<code onmouseout="hideTip(event, '3', 3)" onmouseover="showTip(event, '3', 3)">
assertThat cond msg
</code>
<div class="tip" id="3">
<strong>Signature:</strong> cond:bool -&gt; msg:string -&gt; unit<br />
</div>
</td>
<td class="xmldoc">
<a href="https://github.com/tomcl/ISSIE/tree/master/src/Common/Helpers.fs#L9-9" class="github-link">
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<code onmouseout="hideTip(event, '4', 4)" onmouseover="showTip(event, '4', 4)">
cropToLength len fromStart str
</code>
<div class="tip" id="4">
<strong>Signature:</strong> len:int -&gt; fromStart:bool -&gt; str:string -&gt; string<br />
</div>
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<td class="xmldoc">
<a href="https://github.com/tomcl/ISSIE/tree/master/src/Common/Helpers.fs#L45-45" class="github-link">
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<p>Crop a string to the specified length.
fromStart indicates whether you want the first <len> characters or the last
<len> characters.</p>
</td>
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<td class="member-name">
<code onmouseout="hideTip(event, '5', 5)" onmouseover="showTip(event, '5', 5)">
listSet lst item idx
</code>
<div class="tip" id="5">
<strong>Signature:</strong> lst:&#39;a list -&gt; item:&#39;a -&gt; idx:int -&gt; &#39;a list<br />
<strong>Type parameters:</strong> 'a </div>
</td>
<td class="xmldoc">
<a href="https://github.com/tomcl/ISSIE/tree/master/src/Common/Helpers.fs#L33-33" class="github-link">
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<p>Set an element of the list at the specified position.
This function is slow: O(n). Do not use unless necessary.</p>
</td>
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<td class="member-name">
<code onmouseout="hideTip(event, '6', 6)" onmouseover="showTip(event, '6', 6)">
pow2(exponent)
</code>
<div class="tip" id="6">
<strong>Signature:</strong> exponent:int -&gt; int<br />
</div>
</td>
<td class="xmldoc">
<a href="https://github.com/tomcl/ISSIE/tree/master/src/Common/Helpers.fs#L24-24" class="github-link">
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<p>Return 2^exponent.</p>
</td>
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<td class="member-name">
<code onmouseout="hideTip(event, '7', 7)" onmouseover="showTip(event, '7', 7)">
pow2int64(exponent)
</code>
<div class="tip" id="7">
<strong>Signature:</strong> exponent:int -&gt; int64<br />
</div>
</td>
<td class="xmldoc">
<a href="https://github.com/tomcl/ISSIE/tree/master/src/Common/Helpers.fs#L28-28" class="github-link">
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<p>Return 2^exponent, packed into an int64.</p>
</td>
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<td class="member-name">
<code onmouseout="hideTip(event, '8', 8)" onmouseover="showTip(event, '8', 8)">
tryFindError(lst)
</code>
<div class="tip" id="8">
<strong>Signature:</strong> lst:Result&lt;&#39;a,&#39;b&gt; list -&gt; Result&lt;&#39;a list,&#39;b&gt;<br />
<strong>Type parameters:</strong> 'a, 'b </div>
</td>
<td class="xmldoc">
<a href="https://github.com/tomcl/ISSIE/tree/master/src/Common/Helpers.fs#L15-15" class="github-link">
<img src="../content/img/github.png" class="normal" />
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<p>Return the first error found in a list of results, or the list of Oks if
there are none.</p>
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