Offline jQuery Documentation for MacOS X

I’m rewriting UVFood to use jQuery instead of Prototype. I’m liking jQuery quite a bit and my code’s looking much better (and tighter).

I don’t always have reliable online access when I’m coding – in particular, I was on a bus today for a couple of hours and didn’t always have Internet access. There are a couple of dashboard widgets for MacOS X which I found that helped out on the jQuery documentation front.

First, there’s This widget is designed for browsing… click around in it, but don’t expect to search it.

Then there’s also This widget is designed for searching – if you know what you’re looking for, you can find it quickly.

They’re both useful in different ways, and I used them both this afternoon.

LJ Crossposting

I have a bunch of half-written things that I haven’t finished because I haven’t been happy with the state of cross-posting between this blog and Livejournal and I haven’t really had the time to deal with fixing it.

I’m cross-posting to make it easier for friends on LJ to read my blog entries. I find that using LJ to follow friends is a great feature; it’s what keeps me coming back to LJ.

It looks like I have it working now. I currently have it set up to cross-post everything. I’ll be writing a lot more technical articles in the near term, with some non-technical stuff mixed in. If you’d rather that I didn’t cross-post, or didn’t cross-post everything, let me know and I’ll see what I can figure out about limiting it.

I have cross-posting set up to require that comments be left here instead of on LJ. If you want to comment, you can use OpenID to login – instead of creating an account, just use the OpenID option on the account creation page. You can then authenticate yourself with Livejournal and not have another account to keep track of.

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Brian Eno Is Alive and Well in My iPhone

Bloom screenshot

The most entertaining iPhone app I’ve seen so far comes from Brian Eno and Peter Chilvers and is called “Bloom”.

Given the current events in the US (or global) economy, “Bloom” rescues me from continually listening to only chill-out music and Radiohead’s most apocalyptic songs.

Instead, “Bloom” allows me to anesthetize (or lobotomize) myself with a mini-Eno, embedded in my iPhone, happy to produce ambient music on demand or from my cue.

The screen is a fuzzy pastel color, varying with your mood (“Bergamot”, “Vetiver”, “Ylang”, “Banzoin” and others). You can choose to have it create music for you, or to give it some cues by tapping various parts of the screen. Tap out a few notes and it will play them back, looping them into a piece of ambient fuzz that could just as well be a song from "Music for Airports". You can freeze the melody from evolving if you like it, but there are no provisions for saving, recording or sharing it, which is just as well.

I was so enthralled with it after buying it that I lost track of time and was late to an appointment.

“Bloom” costs $3.99 and you can buy it through the iTunes Store. Here are screenshots of the preferences:

"Bloom" About Page

"Bloom" preferences

"Bloom" preferences

Showing a Column as a UNIX Timestamp in MySQL

I often need to store a timestamp in the UVFood database. There are lots of things I need timestamps for – recording the time that a user account was made or a modification was made, for instance.

While MySQL has quite an assortment of date and time formats which it supports, I usually find it most convenient to store timestamps as an INT and just put the UNIX seconds since the epoch value in there. I don’t need to do funky searches on the timestamps, I just need to do simple comparisons.

A drawback is that sometimes when I’m working with the database by hand it’s annoying to see the timestamps as big numbers – sometimes it would be very helpful to see them as dates and times.

Fortunately there’s a MySQL function that helps with this problem. The “FROM_UNIXTIME()” function will interpret a numeric column’s value as a UNIX seconds-from-the-epoch value and show it as a date and timestamp.

Using it I can easily do things like:


and see it as:

| URL | FROM_UNIXTIME(timestamp) |
| explore/users/94 | 2008-10-05 22:49:39 |

rather than

| URL | timestamp |
| explore/users/94 | 1223261379 |

MacOS X DVDs – Versions and Saving a Little Money on Them

A brief discussion on a private mailing list I’m on reminded me that there might be some interest in this.

MacOS X Leopard has been out for a while, but there are still a lot of folks who haven’t upgraded to it.

The upgrade comes in two versions, the single user licensed one and the “family pack”.

The single user licensed version is as it says, licensed for use on a single Apple computer and lists for $129.99. The family pack is licensed for use for up to five machines in one household, and lists for $199, a pretty good deal for staying legal at less than the cost of two single user licenses. While you can buy the single user and family packs directly from Apple with no shipping fees, Amazon usually has a better deal. At the time I wrote this, they were charging $26 less than list for the single user edition and $44.51 less than list for the family pack, both with free shipping.

If you’re coming to it from the Windows world, you’ll find that Mac OS X Leopard is a pleasure to install. It requires no serial numbers or product activation. You won’t have to worry about matching the particular distribution to the particular CD key.

You should be forewarned that, in my experience, the restore DVD that comes with a computer will only work with that computer or class of computers. So if you have a MacBook restore DVD it likely will refuse to install on an iMac.

Amazon also has a pretty good deal on Leopard Server: $104.51 off the 10 user version (normal list price $499) and $168.46 off the unlimited user version (normal list price $999). Leopard Server does have a serial number and will detect multiple copies of itself running on the same network.

I don’t expect the next version of MacOS X (“Snow Leopard”) to be out for another 9 to 15 months. Snow Leopard is targeted at providing performance and stability rather than feature enhancements, and will only run on Intel machines. It should be a worthwhile upgrade (who doesn’t want performance and stability?) but I wouldn’t hold my breath waiting for it.

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