<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">I think that’s pretty close to what <a href="https://github.com/massemanet/eper/blob/master/doc/redbug.txt" class="">redbug</a> does. I use redbug for debugging purposes in almost all of my projects. In fact, eper is one of my “default dependencies”, together with lager and sync :)<br class=""><div class="">
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<br class=""><div><blockquote type="cite" class=""><div class="">On Jan 13, 2015, at 09:36, Vlad Dumitrescu <<a href="mailto:vladdu55@gmail.com" class="">vladdu55@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi all!<div class=""><br class=""></div><div class="">I just got a crazy idea and I think it's not that crazy, but I'm willing to get feedback on that :-)</div><div class=""><br class=""></div><div class="">The main reason I use the debugger is to check that the intermediary values in a computation are the expected ones. The alternative (which works without messing up timeouts) is to print out values at points of interest, but it is messy (there's a lot of boilerplate to type and the interesting code becomes hard to read).</div><div class=""><br class=""></div><div class="">So, I thought, what if, instead of interpreting a module in order to debug it, we compile it with a special parse transform that inserts tracing calls after each expression in the code, automatically keeping track of the variables visible in the scope and their values?</div><div class=""><br class=""></div><div class="">The output can be via io:format, et:report_event, or something else (configurable). </div><div class=""><br class=""></div><div class="">Could this "trogging" or "logtracing" be useful, or am I delusional? Maybe there already is such a thing, the Erlang ecosystem is getting difficult to keep in the working memory :-)</div><div class=""><br class=""></div><div class="">best regards,</div><div class="">Vlad</div><div class=""><br class=""></div></div>
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