The Boston Diaries

The ongoing saga of a programmer who doesn't live in Boston, nor does he even like Boston, but yet named his weblog/journal “The Boston Diaries.”

Go figure.

Thursday, September 03, 2009

Neat, but I still don't like it

I'm not a fan of tail call optimization, but still, I didn't quite realize that gcc will optimize tail calls if given the -O2 option (found while reading Hacker News).

Okay, this is something I have to try out:

[spc]lucy:/tmp>cat >forever.c
int main(int argc,char *argv[])
{
  return main(--argc,argv);
}
^D
[spc]lucy:/tmp>gcc forever.c
[spc]lucy:/tmp>./a.out
Segmentation fault (core dumped)
[spc]lucy:/tmp>gcc -O2 forever.c
[spc]lucy:/tmp>./a.out
	(several minutes go by)
^C
[spc]lucy:/tmp>

That's interesting. Not sure how it'll impact any code I write, but still, it's interesting.


Notes on a browser history mechanism, Part II

Find any page you have visited quickly and easily. Shows your browsing history as a tree of tabs, with thumbnail screenshots of the web-pages in every tab you have opened.

Via Hacker News, History Tree 1.0

I remember talking about a browser history mechanism like this seven years ago. I'm surprised it's taken this long to implement this.

I'm also surprised that there can be Firefox extensions that are operating system specific (in this case, Windows only—sigh).

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You have my permission to link freely to any entry here. Go ahead, I won't bite. I promise.

The dates are the permanent links to that day's entries (or entry, if there is only one entry). The titles are the permanent links to that entry only. The format for the links are simple: Start with the base link for this site: https://boston.conman.org/, then add the date you are interested in, say 2000/08/01, so that would make the final URL:

https://boston.conman.org/2000/08/01

You can also specify the entire month by leaving off the day portion. You can even select an arbitrary portion of time.

You may also note subtle shading of the links and that's intentional: the “closer” the link is (relative to the page) the “brighter” it appears. It's an experiment in using color shading to denote the distance a link is from here. If you don't notice it, don't worry; it's not all that important.

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