On Thu, Oct 27, 2011 at 10:24 AM, Milan Straka <span dir="ltr">&lt;<a href="mailto:fox@ucw.cz">fox@ucw.cz</a>&gt;</span> wrote:<div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

I believe<br>
<br>
delete undefined Nil<br>
<br>
does not terminate with current definition, but would terminate<br>
if the explicit seq would not be present.<br></blockquote><div><br></div><div>Good point.</div><div><br></div><div>I think option 2 is bad as it gives users no way to know which functions are strict in their value argument without knowing the implementation or us documenting every function with the strictness properties. We could do the latter but the API would be simpler if we just said that all functions are strict in their key and value arguments.</div>

<div><br></div><div>-- Johan</div><div> </div></div>