<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Jun 27, 2013, at 11:49 PM, Laurent wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Jun 27, 2013 at 9:08 PM, John Clements <span dir="ltr"><<a href="mailto:clements@brinckerhoff.org" target="_blank">clements@brinckerhoff.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-style: solid; border-left-color: rgb(204, 204, 204); padding-left: 1ex; position: static; z-index: auto; "><div class="im"><br>
On Jun 12, 2013, at 11:15 AM, Eric Tanter wrote:<br>
<br>
> Hi,<br>
><br>
> I remember that someone, some time ago (how precise!), posted on this list a link to a couple of slides that nicely and concisely illustrate the advantages of pure functions vs. impure ones when doing testing.<br>
<br>
</div>Sorry for the late link. Pardon the egotism, but you *might* have been thinking of my short youtube video:<br>
<br>
<a href="https://www.youtube.com/watch?v=kx1UbpWlKqo&feature=c4-overview&list=UUxmd9H0WC2vieAsgJVJ_pNA" target="_blank">https://www.youtube.com/watch?v=kx1UbpWlKqo&feature=c4-overview&list=UUxmd9H0WC2vieAsgJVJ_pNA</a><br>
<br>
It's called "Mutation and Testing".</blockquote><div><br>Even in the case this is not what Éric was remembering, thanks for sharing it!<br><br>Also in the next video, "Use the stepper! Which is wonderful, because I wrote it." made my day :oD<br>
</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> It uses #lang slideshow slides; I'd be glad to share them.<br></blockquote><div><br></div>
<div>Have you written some helpful helpers to draw the figures?<br></div><div>(I think slideshow needs a lib for drawing diagrams, on top of `pin-arrow' and friends.)<br></div></div></div></div></blockquote><div><br></div><div>A few custom-built abstractions (I don't just have a long list of coordinates), but nothing more general.</div><div><br></div><div>Thanks for your kind words!</div><div><br></div><div>John</div><div><br></div></div></body></html>