Beauty in Nature
I was walking home yesterday and walked past a girls soccer team practicing. The coach blew his whistle and they all started running around the circumference of the field. Naturally this brought up...
View ArticleDFT Magnitude/Power Spectra
I often get confused about the scaling of magnitude and power spectra. I think I've worked it out so I'm puttin it here for my own benefit, and maybe the benefit of someone on the internet. If I'm...
View ArticleKill your Kids
Not literally, of course. This is programming talk, those of you who aren't programmers can let your eyes glaze over. I wanted a script to start a bunch of little servers, then wait around for them to...
View ArticleWhy I chose Facebook over Google
May was a busy month, and not in a "fast-track-to-finish-dissertation" kind of way. I zoomed to Florida for a family reunion, then zoomed across the country to San Fransisco for an interview at...
View ArticleTerminal Merge Conflict Resolution
A very important tool in the toolbox of any collaborating developer is a merge conflict resolution tool. OS X has the fantastic FileMerge, there are various graphical tools for linux like kdiff3, but I...
View ArticleSIGABRT and gdb
So you fire up gdb and pepper your code with assert() calls. Then one of your assertions fails and you see this: Assertion failed: (item_idx < si.slabclass[clsid].perslab), function ITEM, file...
View ArticleEINVAL on sendmsg() to a UNIX Doman Socket
I'm seeing an EINVAL result when trying to do a sndmsg() call to a UNIX socket. The man page says that means that the sum of the iov_lens overflows an ssize_t, but an ssize_t is 8 bytes on this machine...
View ArticleAC_TYPE_UINT8_T and friends
If you get errors like this: $ autoreconf configure.ac:110: error: possibly undefined macro: AC_TYPE_UINT8_T If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf...
View ArticleGit shutup already
So you have a bunch of local files you don't want to check in and you also don't want to add to the project's official .gitignore file(s)? Solution: edit .git/info/exclude. I like to make a symlink...
View ArticleMutually-recursive Nested Functions in D
From http://digitalmars.com/d/2.0/function.html: Unlike module level declarations, declarations within function scope are processed in order. This means that two nested functions cannot mutually call...
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