http://bluebones.net Adventures in Computer Programming Sat, 28 Jun 2008 11:52:35 +0000 http://backend.userland.com/rss092 en I just installed Hardy Heron on a webserver and found ssh over the LAN paused for a long time after connecting and before asking for the password (or connecting with ssh key). The problem is some kind of reverse DNS lookup that doesn't work on the LAN. After some digging ... http://bluebones.net/2008/06/long-pause-ssh-ing-to-ubuntu-hardy/ There's got to be an easier way to do this. Perhaps I am unsophisticated. But sometimes when I am debugging I just want to print strings to see what is going on. When working with PHP's DOM XML stuff, this is difficult. var_dump and print_r don't do what ... http://bluebones.net/2008/04/string-representation-of-xml-objects-in-php/ 11:41:13 bakert@bluebones:~$ history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head 4611 vi 3728 u 3367 cd 2817 ruby 1832 ls 1589 svn 1230 td 852 mysql 790 ssh 635 gd http://bluebones.net/2008/04/history-meme/ I wrote my first programs at the age of 8. They are preserved on Tom 1, a 15 minute cassette tape. It starts with copied listings from the ZX Spectrum Introduction book. But before long there is a program called 'askage' which I'm pretty sure is an original composition. Here’s ... http://bluebones.net/2008/04/my-first-program/ Nothing annoys me more than having to manually add tests to a central location in order to get them to run. Here's some code that automatically and recursively (down the directory tree) finds files ending in Test.php and loads the tests within. Now all you need to do ... http://bluebones.net/2008/04/programmatically-find-tests-with-phpunit/ To use PEAR and MAMP together run the following command: /Applications/MAMP/bin/php5/bin/pear config-show Look up the value of “PEAR directory” in the output and add this directory to include_path in /Applications/MAMP/conf/php5/php.iniChange the php5 in the paths to php4 if you are using that version for some godforsaken reason. http://bluebones.net/2008/03/pear-and-mamp/ Fairly obvious one, this. UK Deal or No Deal contestant’s names flash up at the beginning of the show as if one is being selected at random. However, we can see very easily that this is not really happening.If selection was random (one of 22 potential contestants randomly selected at ... http://bluebones.net/2008/03/deal-or-no-deal-player-selection-is-not-random/ So basically, there are 4 dimensions:Static (expressions have types) vs. dynamic (values have types)Strong (values cannot be coerced to other types without a cast) vs. weak (the runtime performs a variety of coercions for convenience)Latent (no type declarations) vs. manifest (type declarations)Nominal (subtyping relations are declared explicitly) vs. structural (subtyping ... http://bluebones.net/2008/01/typing/ Some of us have spent years scraping news sites. Others have spent them downloading government data. Others have spent them grabbing catalog records for books. And each time, in each community, we reinvent the same things over and over again: scripts for doing crawls and notifying us when things are ... http://bluebones.net/2008/01/scraping-the-web/ The table with the foreign key in it belongs_to the table that that foreign key references. The table with the referenced primary key in it has_one or has_many of the table with the foreign key in it. I will not forget this again! http://bluebones.net/2008/01/has_one-has_many-and-belongs_to-in-activerecord/