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<a href="./Home">MLton 20130715</a>
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<div id="header">
<h1>MLtonStructure</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>The <span class="monospaced">MLton</span> structure contains a lot of functionality that is not
available in the <a href="BasisLibrary">Basis Library</a>.  As a warning,
please keep in mind that the <span class="monospaced">MLton</span> structure and its
substructures do change from release to release of MLton.</p></div>
<div class="listingblock">
<div class="content"><div class="highlight"><pre><span></span><span class="kr">structure</span> <span class="nn">MLton</span><span class="p">:</span>
   <span class="kr">sig</span>
      <span class="kr">val</span> <span class="nv">eq</span><span class="p">:</span> <span class="nd">&#39;a</span> <span class="n">*</span> <span class="nd">&#39;a</span> <span class="p">-&gt;</span> <span class="n">bool</span>
      <span class="kr">val</span> <span class="nv">equal</span><span class="p">:</span> <span class="nd">&#39;a</span> <span class="n">*</span> <span class="nd">&#39;a</span> <span class="p">-&gt;</span> <span class="n">bool</span>
      <span class="kr">val</span> <span class="nv">hash</span><span class="p">:</span> <span class="nd">&#39;a</span> <span class="p">-&gt;</span> <span class="nn">Word32</span><span class="p">.</span><span class="n">word</span>
      <span class="kr">val</span> <span class="nv">isMLton</span><span class="p">:</span> <span class="n">bool</span>
      <span class="kr">val</span> <span class="nv">share</span><span class="p">:</span> <span class="nd">&#39;a</span> <span class="p">-&gt;</span> <span class="n">unit</span>
      <span class="kr">val</span> <span class="nv">shareAll</span><span class="p">:</span> <span class="n">unit</span> <span class="p">-&gt;</span> <span class="n">unit</span>
      <span class="kr">val</span> <span class="nv">size</span><span class="p">:</span> <span class="nd">&#39;a</span> <span class="p">-&gt;</span> <span class="n">int</span>

      <span class="kr">structure</span> <span class="nn">Array</span><span class="p">:</span> <span class="n">MLTON_ARRAY</span>
      <span class="kr">structure</span> <span class="nn">BinIO</span><span class="p">:</span> <span class="n">MLTON_BIN_IO</span>
      <span class="kr">structure</span> <span class="nn">CharArray</span><span class="p">:</span> <span class="n">MLTON_MONO_ARRAY</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">CharArray</span><span class="p">.</span><span class="n">array</span>
                                            <span class="kr">where</span> <span class="kr">type</span> <span class="kt">elem</span> <span class="p">=</span> <span class="nn">CharArray</span><span class="p">.</span><span class="n">elem</span>
      <span class="kr">structure</span> <span class="nn">CharVector</span><span class="p">:</span> <span class="n">MLTON_MONO_VECTOR</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">CharVector</span><span class="p">.</span><span class="n">vector</span>
                                              <span class="kr">where</span> <span class="kr">type</span> <span class="kt">elem</span> <span class="p">=</span> <span class="nn">CharVector</span><span class="p">.</span><span class="n">elem</span>
      <span class="kr">structure</span> <span class="nn">Cont</span><span class="p">:</span> <span class="n">MLTON_CONT</span>
      <span class="kr">structure</span> <span class="nn">Exn</span><span class="p">:</span> <span class="n">MLTON_EXN</span>
      <span class="kr">structure</span> <span class="nn">Finalizable</span><span class="p">:</span> <span class="n">MLTON_FINALIZABLE</span>
      <span class="kr">structure</span> <span class="nn">GC</span><span class="p">:</span> <span class="n">MLTON_GC</span>
      <span class="kr">structure</span> <span class="nn">IntInf</span><span class="p">:</span> <span class="n">MLTON_INT_INF</span>
      <span class="kr">structure</span> <span class="nn">Itimer</span><span class="p">:</span> <span class="n">MLTON_ITIMER</span>
      <span class="kr">structure</span> <span class="nn">LargeReal</span><span class="p">:</span> <span class="n">MLTON_REAL</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">LargeReal</span><span class="p">.</span><span class="n">real</span>
      <span class="kr">structure</span> <span class="nn">LargeWord</span><span class="p">:</span> <span class="n">MLTON_WORD</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">LargeWord</span><span class="p">.</span><span class="n">word</span>
      <span class="kr">structure</span> <span class="nn">Platform</span><span class="p">:</span> <span class="n">MLTON_PLATFORM</span>
      <span class="kr">structure</span> <span class="nn">Pointer</span><span class="p">:</span> <span class="n">MLTON_POINTER</span>
      <span class="kr">structure</span> <span class="nn">ProcEnv</span><span class="p">:</span> <span class="n">MLTON_PROC_ENV</span>
      <span class="kr">structure</span> <span class="nn">Process</span><span class="p">:</span> <span class="n">MLTON_PROCESS</span>
      <span class="kr">structure</span> <span class="nn">Profile</span><span class="p">:</span> <span class="n">MLTON_PROFILE</span>
      <span class="kr">structure</span> <span class="nn">Random</span><span class="p">:</span> <span class="n">MLTON_RANDOM</span>
      <span class="kr">structure</span> <span class="nn">Real</span><span class="p">:</span> <span class="n">MLTON_REAL</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Real</span><span class="p">.</span><span class="n">real</span>
      <span class="kr">structure</span> <span class="nn">Real32</span><span class="p">:</span> <span class="kr">sig</span>
                           <span class="kr">include</span> <span class="nn">MLTON_REAL</span>
                           <span class="kr">val</span> <span class="nv">castFromWord</span><span class="p">:</span> <span class="nn">Word32</span><span class="p">.</span><span class="n">word</span> <span class="p">-&gt;</span> <span class="n">t</span>
                           <span class="kr">val</span> <span class="nv">castToWord</span><span class="p">:</span> <span class="n">t</span> <span class="p">-&gt;</span> <span class="nn">Word32</span><span class="p">.</span><span class="n">word</span>
                        <span class="kr">end</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Real32</span><span class="p">.</span><span class="n">real</span>
      <span class="kr">structure</span> <span class="nn">Real64</span><span class="p">:</span> <span class="kr">sig</span>
                           <span class="kr">include</span> <span class="nn">MLTON_REAL</span>
                           <span class="kr">val</span> <span class="nv">castFromWord</span><span class="p">:</span> <span class="nn">Word64</span><span class="p">.</span><span class="n">word</span> <span class="p">-&gt;</span> <span class="n">t</span>
                           <span class="kr">val</span> <span class="nv">castToWord</span><span class="p">:</span> <span class="n">t</span> <span class="p">-&gt;</span> <span class="nn">Word64</span><span class="p">.</span><span class="n">word</span>
                        <span class="kr">end</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Real64</span><span class="p">.</span><span class="n">real</span>
      <span class="kr">structure</span> <span class="nn">Rlimit</span><span class="p">:</span> <span class="n">MLTON_RLIMIT</span>
      <span class="kr">structure</span> <span class="nn">Rusage</span><span class="p">:</span> <span class="n">MLTON_RUSAGE</span>
      <span class="kr">structure</span> <span class="nn">Signal</span><span class="p">:</span> <span class="n">MLTON_SIGNAL</span>
      <span class="kr">structure</span> <span class="nn">Syslog</span><span class="p">:</span> <span class="n">MLTON_SYSLOG</span>
      <span class="kr">structure</span> <span class="nn">TextIO</span><span class="p">:</span> <span class="n">MLTON_TEXT_IO</span>
      <span class="kr">structure</span> <span class="nn">Thread</span><span class="p">:</span> <span class="n">MLTON_THREAD</span>
      <span class="kr">structure</span> <span class="nn">Vector</span><span class="p">:</span> <span class="n">MLTON_VECTOR</span>
      <span class="kr">structure</span> <span class="nn">Weak</span><span class="p">:</span> <span class="n">MLTON_WEAK</span>
      <span class="kr">structure</span> <span class="nn">Word</span><span class="p">:</span> <span class="n">MLTON_WORD</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Word</span><span class="p">.</span><span class="n">word</span>
      <span class="kr">structure</span> <span class="nn">Word8</span><span class="p">:</span> <span class="n">MLTON_WORD</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Word8</span><span class="p">.</span><span class="n">word</span>
      <span class="kr">structure</span> <span class="nn">Word16</span><span class="p">:</span> <span class="n">MLTON_WORD</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Word16</span><span class="p">.</span><span class="n">word</span>
      <span class="kr">structure</span> <span class="nn">Word32</span><span class="p">:</span> <span class="n">MLTON_WORD</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Word32</span><span class="p">.</span><span class="n">word</span>
      <span class="kr">structure</span> <span class="nn">Word64</span><span class="p">:</span> <span class="n">MLTON_WORD</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Word64</span><span class="p">.</span><span class="n">word</span>
      <span class="kr">structure</span> <span class="nn">Word8Array</span><span class="p">:</span> <span class="n">MLTON_MONO_ARRAY</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Word8Array</span><span class="p">.</span><span class="n">array</span>
                                             <span class="kr">where</span> <span class="kr">type</span> <span class="kt">elem</span> <span class="p">=</span> <span class="nn">Word8Array</span><span class="p">.</span><span class="n">elem</span>
      <span class="kr">structure</span> <span class="nn">Word8Vector</span><span class="p">:</span> <span class="n">MLTON_MONO_VECTOR</span> <span class="kr">where</span> <span class="kr">type</span> <span class="kt">t</span> <span class="p">=</span> <span class="nn">Word8Vector</span><span class="p">.</span><span class="n">vector</span>
                                               <span class="kr">where</span> <span class="kr">type</span> <span class="kt">elem</span> <span class="p">=</span> <span class="nn">Word8Vector</span><span class="p">.</span><span class="n">elem</span>
      <span class="kr">structure</span> <span class="nn">World</span><span class="p">:</span> <span class="n">MLTON_WORLD</span>
   <span class="kr">end</span>
</pre></div></div></div>
</div>
</div>
<div class="sect1">
<h2 id="_substructures">Substructures</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<a href="MLtonArray">MLtonArray</a>
</p>
</li>
<li>
<p>
<a href="MLtonBinIO">MLtonBinIO</a>
</p>
</li>
<li>
<p>
<a href="MLtonCont">MLtonCont</a>
</p>
</li>
<li>
<p>
<a href="MLtonExn">MLtonExn</a>
</p>
</li>
<li>
<p>
<a href="MLtonFinalizable">MLtonFinalizable</a>
</p>
</li>
<li>
<p>
<a href="MLtonGC">MLtonGC</a>
</p>
</li>
<li>
<p>
<a href="MLtonIntInf">MLtonIntInf</a>
</p>
</li>
<li>
<p>
<a href="MLtonIO">MLtonIO</a>
</p>
</li>
<li>
<p>
<a href="MLtonItimer">MLtonItimer</a>
</p>
</li>
<li>
<p>
<a href="MLtonMonoArray">MLtonMonoArray</a>
</p>
</li>
<li>
<p>
<a href="MLtonMonoVector">MLtonMonoVector</a>
</p>
</li>
<li>
<p>
<a href="MLtonPlatform">MLtonPlatform</a>
</p>
</li>
<li>
<p>
<a href="MLtonPointer">MLtonPointer</a>
</p>
</li>
<li>
<p>
<a href="MLtonProcEnv">MLtonProcEnv</a>
</p>
</li>
<li>
<p>
<a href="MLtonProcess">MLtonProcess</a>
</p>
</li>
<li>
<p>
<a href="MLtonRandom">MLtonRandom</a>
</p>
</li>
<li>
<p>
<a href="MLtonReal">MLtonReal</a>
</p>
</li>
<li>
<p>
<a href="MLtonRlimit">MLtonRlimit</a>
</p>
</li>
<li>
<p>
<a href="MLtonRusage">MLtonRusage</a>
</p>
</li>
<li>
<p>
<a href="MLtonSignal">MLtonSignal</a>
</p>
</li>
<li>
<p>
<a href="MLtonSyslog">MLtonSyslog</a>
</p>
</li>
<li>
<p>
<a href="MLtonTextIO">MLtonTextIO</a>
</p>
</li>
<li>
<p>
<a href="MLtonThread">MLtonThread</a>
</p>
</li>
<li>
<p>
<a href="MLtonVector">MLtonVector</a>
</p>
</li>
<li>
<p>
<a href="MLtonWeak">MLtonWeak</a>
</p>
</li>
<li>
<p>
<a href="MLtonWord">MLtonWord</a>
</p>
</li>
<li>
<p>
<a href="MLtonWorld">MLtonWorld</a>
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_values">Values</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<span class="monospaced">eq (x, y)</span>
</p>
<div class="paragraph"><p>returns true if <span class="monospaced">x</span> and <span class="monospaced">y</span> are equal as pointers.  For simple types
like <span class="monospaced">char</span>, <span class="monospaced">int</span>, and <span class="monospaced">word</span>, this is the same as equals.  For
arrays, datatypes, strings, tuples, and vectors, this is a simple
pointer equality.  The semantics is a bit murky.</p></div>
</li>
<li>
<p>
<span class="monospaced">equal (x, y)</span>
</p>
<div class="paragraph"><p>returns true if <span class="monospaced">x</span> and <span class="monospaced">y</span> are structurally equal.  For equality
types, this is the same as <a href="PolymorphicEquality">PolymorphicEquality</a>.  For other types,
it is a conservative approximation of equivalence.</p></div>
</li>
<li>
<p>
<span class="monospaced">hash x</span>
</p>
<div class="paragraph"><p>returns a structural hash of <span class="monospaced">x</span>.  The hash function is consistent
between execution of the same program, but may not be consistent
between different programs.</p></div>
</li>
<li>
<p>
<span class="monospaced">isMLton</span>
</p>
<div class="paragraph"><p>is always <span class="monospaced">true</span> in a MLton implementation, and is always <span class="monospaced">false</span> in a
stub implementation.</p></div>
</li>
<li>
<p>
<span class="monospaced">share x</span>
</p>
<div class="paragraph"><p>maximizes sharing in the heap for the object graph reachable from <span class="monospaced">x</span>.</p></div>
</li>
<li>
<p>
<span class="monospaced">shareAll ()</span>
</p>
<div class="paragraph"><p>maximizes sharing in the heap by sharing space for equivalent
immutable objects.  A call to <span class="monospaced">shareAll</span> performs a major garbage
collection, and takes time proportional to the size of the heap.</p></div>
</li>
<li>
<p>
<span class="monospaced">size x</span>
</p>
<div class="paragraph"><p>returns the amount of heap space (in bytes) taken by the value of <span class="monospaced">x</span>,
including all objects reachable from <span class="monospaced">x</span> by following pointers.  It
takes time proportional to the size of <span class="monospaced">x</span>.  See below for an example.</p></div>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_a_id_size_a_example_of_span_class_monospaced_mlton_size_span"><a id="size"></a>Example of <span class="monospaced">MLton.size</span></h2>
<div class="sectionbody">
<div class="paragraph"><p>This example, <span class="monospaced">size.sml</span>, demonstrates the application of <span class="monospaced">MLton.size</span>
to many different kinds of objects.</p></div>
<div class="listingblock">
<div class="content"><div class="highlight"><pre><span></span><span class="kr">fun</span> <span class="nd">&#39;a</span> <span class="nf">printSize</span> <span class="p">(</span><span class="n">name</span><span class="p">:</span> <span class="n">string</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="nd">&#39;a</span><span class="p">):</span> <span class="n">unit</span><span class="p">=</span>
   <span class="p">(</span><span class="n">print</span> <span class="s2">&quot;The size of &quot;</span>
    <span class="p">;</span> <span class="n">print</span> <span class="n">name</span>
    <span class="p">;</span> <span class="n">print</span> <span class="s2">&quot; is &quot;</span>
    <span class="p">;</span> <span class="n">print</span> <span class="p">(</span><span class="nn">Int</span><span class="p">.</span><span class="n">toString</span> <span class="p">(</span><span class="nn">MLton</span><span class="p">.</span><span class="n">size</span> <span class="n">value</span><span class="p">))</span>
    <span class="p">;</span> <span class="n">print</span> <span class="s2">&quot; bytes.</span><span class="se">\n</span><span class="s2">&quot;</span><span class="p">)</span>

<span class="kr">val</span> <span class="nv">l</span> <span class="p">=</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">]</span>

<span class="kr">val</span> <span class="p">_</span> <span class="p">=</span>
   <span class="p">(</span>
    <span class="n">printSize</span> <span class="p">(</span><span class="s2">&quot;an int list of length 4&quot;</span><span class="p">,</span> <span class="n">l</span><span class="p">)</span>
    <span class="p">;</span> <span class="n">printSize</span> <span class="p">(</span><span class="s2">&quot;a string of length 10&quot;</span><span class="p">,</span> <span class="s2">&quot;0123456789&quot;</span><span class="p">)</span>
    <span class="p">;</span> <span class="n">printSize</span> <span class="p">(</span><span class="s2">&quot;an int array of length 10&quot;</span><span class="p">,</span> <span class="nn">Array</span><span class="p">.</span><span class="n">tabulate</span> <span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="kr">fn</span> <span class="p">_</span> <span class="p">=&gt;</span> <span class="mi">0</span><span class="p">))</span>
    <span class="p">;</span> <span class="n">printSize</span> <span class="p">(</span><span class="s2">&quot;a double array of length 10&quot;</span><span class="p">,</span>
                 <span class="nn">Array</span><span class="p">.</span><span class="n">tabulate</span> <span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="kr">fn</span> <span class="p">_</span> <span class="p">=&gt;</span> <span class="mf">0.0</span><span class="p">))</span>
    <span class="p">;</span> <span class="n">printSize</span> <span class="p">(</span><span class="s2">&quot;an array of length 10 of 2-ples of ints&quot;</span><span class="p">,</span>
                 <span class="nn">Array</span><span class="p">.</span><span class="n">tabulate</span> <span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="kr">fn</span> <span class="n">i</span> <span class="p">=&gt;</span> <span class="p">(</span><span class="n">i</span><span class="p">,</span> <span class="n">i</span> <span class="n">+</span> <span class="mi">1</span><span class="p">)))</span>
    <span class="p">;</span> <span class="n">printSize</span> <span class="p">(</span><span class="s2">&quot;a useless function&quot;</span><span class="p">,</span> <span class="kr">fn</span> <span class="p">_</span> <span class="p">=&gt;</span> <span class="mi">13</span><span class="p">)</span>
    <span class="p">)</span>

<span class="cm">(* This is here so that the list is &quot;useful&quot;.</span>
<span class="cm"> * If it were removed, then the optimizer (remove-unused-constructors)</span>
<span class="cm"> * would remove l entirely.</span>
<span class="cm"> *)</span>
<span class="kr">val</span> <span class="p">_</span> <span class="p">=</span> <span class="kr">if</span> <span class="mi">10</span> <span class="p">=</span> <span class="n">foldl</span> <span class="p">(</span><span class="kr">op</span> <span class="n">+</span><span class="p">)</span> <span class="mi">0</span> <span class="n">l</span>
           <span class="kr">then</span> <span class="p">()</span>
        <span class="kr">else</span> <span class="kr">raise</span> <span class="n">Fail</span> <span class="s2">&quot;bug&quot;</span>

<span class="kr">local</span>
   <span class="kr">open</span> <span class="nn">MLton</span><span class="err">.Cont</span>
<span class="kr">in</span>
   <span class="kr">val</span> <span class="nv">rc</span><span class="p">:</span> <span class="n">int</span> <span class="n">option</span> <span class="n">t</span> <span class="n">option</span> <span class="n">ref</span> <span class="p">=</span> <span class="n">ref</span> <span class="n">NONE</span>
   <span class="kr">val</span> <span class="p">_</span> <span class="p">=</span>
      <span class="kr">case</span> <span class="n">callcc</span> <span class="p">(</span><span class="kr">fn</span> <span class="n">k</span><span class="p">:</span> <span class="n">int</span> <span class="n">option</span> <span class="n">t</span> <span class="p">=&gt;</span> <span class="p">(</span><span class="n">rc</span> <span class="n">:=</span> <span class="n">SOME</span> <span class="n">k</span><span class="p">;</span> <span class="n">throw</span> <span class="p">(</span><span class="n">k</span><span class="p">,</span> <span class="n">NONE</span><span class="p">)))</span> <span class="kr">of</span>
         <span class="n">NONE</span> <span class="p">=&gt;</span> <span class="p">()</span>
       <span class="n">|</span> <span class="n">SOME</span> <span class="n">i</span> <span class="p">=&gt;</span> <span class="n">print</span> <span class="p">(</span><span class="n">concat</span> <span class="p">[</span><span class="nn">Int</span><span class="p">.</span><span class="n">toString</span> <span class="n">i</span><span class="p">,</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="p">])</span>
<span class="kr">end</span>

<span class="kr">val</span> <span class="p">_</span> <span class="p">=</span> <span class="n">printSize</span> <span class="p">(</span><span class="s2">&quot;a continuation option ref&quot;</span><span class="p">,</span> <span class="n">rc</span><span class="p">)</span>

<span class="kr">val</span> <span class="p">_</span> <span class="p">=</span>
   <span class="kr">case</span> <span class="n">!rc</span> <span class="kr">of</span>
      <span class="n">NONE</span> <span class="p">=&gt;</span> <span class="p">()</span>
    <span class="n">|</span> <span class="n">SOME</span> <span class="n">k</span> <span class="p">=&gt;</span> <span class="p">(</span><span class="n">rc</span> <span class="n">:=</span> <span class="n">NONE</span><span class="p">;</span> <span class="nn">MLton</span><span class="p">.</span><span class="nn">Cont</span><span class="p">.</span><span class="n">throw</span> <span class="p">(</span><span class="n">k</span><span class="p">,</span> <span class="n">SOME</span> <span class="mi">13</span><span class="p">))</span>
</pre></div></div></div>
<div class="paragraph"><p>Compile and run as usual.</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>% mlton size.sml
% ./size
The size of an int list of length 4 is 48 bytes.
The size of a string of length 10 is 24 bytes.
The size of an int array of length 10 is 52 bytes.
The size of a double array of length 10 is 92 bytes.
The size of an array of length 10 of 2-ples of ints is 92 bytes.
The size of a useless function is 0 bytes.
The size of a continuation option ref is 4544 bytes.
13
The size of a continuation option ref is 8 bytes.</pre>
</div></div>
<div class="paragraph"><p>Note that sizes are dependent upon the target platform and compiler
optimizations.</p></div>
</div>
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