又再來一個回顧了。在這一年,有三項令我比較注目的技術名詞 :Ajax, Ruby on Rails, Web 2.0,三者又互有關係。
自 GMail 和 Google Maps 面世,大家都對 Ajax 有了很大興趣,結果在今年有很多不同的 Ajax library 出世,如 Prototype , Dojo 等等,也研究出很多做 Ajax 的
In particular, universities have a computing environment that is morepeculiar than I think a lot of people realize (sometimes even peopleinside universities, because from some angles it is very easy tomiss). I wrote about one example of this (and the practical effects ithas) back in UniversityFirewalls .
One of the ways that they are peculiar, a way that I think is at thecore of a lot of things, is this:
In most parts of most companies, communicating with the rest of thecompany is
This week we received 12,270 email messages from 159 different IPaddresses. Our SMTP server handled 31,972 sessions from 2,643different IP addresses. Session volume is down from last week , which is a relief, although it'snot back down to the historical levels yet.
However, connection volume has not dropped substantially from last week : 260,000 connections from at least 53,760 different IPaddresses,
I've mentioned before that in Python, def is actually an executablestatement (in FunctionDefinitionOrder ). A logical consequences of thisis that default values for function arguments are evaluated only once,when the def runs.
I say this because expressions generally get evaluated when any Python statement runs, so the expressions in things like ' deffoobar(a, b=greeble(c), d=None): ' are not being an exception. Theexception would be if they were not evaluated then and were instead
Being able to find out what hardware is in a random machine is one ofthose things you don't think about very much until you inheritresponsibility for a bunch of machines that you didn't build yourself.
The best hardware inventory program I've used is SGI's hinv (although it doesn't have enough disk information). Linux has decenthardware inventory support, but not bundled into a single command; youhave to look through a bunch of /proc files and know a few commandslike
又再來一個回顧了。在這一年,有三項令我比較注目的技術名詞 :Ajax, Ruby on Rails, Web 2.0,三者又互有關係。
自 GMail 和 Google Maps 面世,大家都對 Ajax 有了很大興趣,結果在今年有很多不同的 Ajax library 出世,如 Prototype , Dojo 等等,也研究出很多做 Ajax 的