Nesting
By a quirk of evolutionary fate, human beings are often proud of being different from even our closest cousins in that chimps don't have the ability to reason. Hard as it is for us to imagine, nevertheless, the nesting instinct encoded in the nucleotides of our feathered or four-legged friends of
早
最近偶爾需要提早一小時工作，幸好我對早起這回事是毫無感覺的。 即使不是工作需要，我也早起。
教書的時候，我幾乎是全校最早到的人，有一年還無聊到跟一位教數學的同事比賽誰更早上學。提早上學的好處是多些時間改作
Tips for a Vacation in Rome, Italy
Spagna - the Spanish Steps, at sunset.
Rome, Italy is a truly beautiful city, and a very worthy destination for people of all ages. After having spent four days in Rome, and a couple weeks outside of Rome, I've learned a few things that would, in my mind, be helpful tips for anyone else following in my footsteps:
- Wear tennis shoes or comfortable shoes. You have to walk—a lot—if you really want to see and enjoy Rome. The metropolitana (Rome'
這一刻
Understanding hash length extension attacks
Here is a somewhat counterintuitive result (at least for me): supposethat you have the SHA1 hash of some value, SHA1(m) . If you know thelength of m, it is possible to work out the SHA1 hash of m, plussome magic, plus anything more of your choice. In the literature ,this is called an 'extension attack'. I think I understand why thisis so and basically why it has to be so, and now I'm going to
my new toy!
Sony VAIO X 系列 - VPCX115LG
- highly recommended~
| 處理器技術 *1 | Intel® Atom™處理器Z540 (1.86 GHz, 支援HT技術 *2 ) |
| 晶片 | Intel® System Controller Hub US15W 晶片 |
| 作業系統 | Windows® 7 Professional 32-bit 英文版 繁體中文、簡體中文、阿拉伯文、泰文語言套裝 |
| 處理器 |
Rome, Italy - The Eternal City [Video]
Rome Italy, 2009 - A video to wrap up my time in the Eternal City (I'm heading home in two days!):
四年前
很少人會記得自己幾年前的某一天做過些什麼，我比較念舊，有些日子，總是難以忘記。
寫這幾行字時大概是晚上九點五十分，四年前這個時候，我在一個看台上
視野
視文學雜誌為社會企業
（刊於星島）
也許有香港人不知道，香港的本土文學，素來是受兩岸三地以至國際肯定的。別說西西、董啟章等作家的著作常由台灣出版社出版，內地也有青年讀者對於黃碧雲、李碧華等
Why per-process (or per-user) memory resource limits are hard
A while back I wrote a little thing about process memory resourcelimits . Today I feel like elaborating on why this isa hard problem that people haven't solved yet.
Let's consider the simplest case possible: per-process RSS limits. Inthe abstract, this is simple; you keep track of how many physical pagesa process has in its page tables, and when a process that is at its RSSlimit wants to add a new page, it must first release its mapping foran existing one