You can make them from MVars.<br><br><div class="gmail_quote">On Dec 2, 2007 8:03 PM, Conal Elliott &lt;<a href="mailto:conal@conal.net">conal@conal.net</a>&gt; wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
what became of (assign-once) IVars?&nbsp; afaict, they were in concurrent haskell and now aren&#39;t.<br>
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