<div dir="ltr"><div class="markdown-here-wrapper" style=""><p style="margin:0px 0px 1.2em!important">Hello,</p>
<p style="margin:0px 0px 1.2em!important">Does anyone know of anything like <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);border-radius:3px;display:inline;background-color:rgb(248,248,248)">Data.ByteString.unfoldr</code>, except that it can fail with a return value?</p>
<p style="margin:0px 0px 1.2em!important">Cheers,</p>
<p style="margin:0px 0px 1.2em!important">-John</p>
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