大约有 43,000 项符合查询结果（耗时：0.0651秒） [XML]
What is base 64 encoding used for?
...al: store the decimal value of each byte as three numbers: 045 112 101 037 etc. where each byte is represented by 3 bytes. The data bloats three-fold.
Hexadecimal: store the bytes as hex pairs: AC 47 0D 1A etc. where each byte is represented by 2 bytes. The data bloats two-fold.
Base-64 maps 3 byt...
Relational table naming convention [closed]
...ubject Area:
REF_ for Reference tables
OE_ for the Order Entry cluster, etc.
Only at the physical level, not the logical (it clutters the model).
Suffix
Never use suffixes on tables, and always use suffixes on everything else. That means in the logical, normal use of the database, there are n...
Check to see if python script is running
...ns up its pidfile under any circumstances (when killed, exceptions raised, etc.).
share
|
improve this answer
|
follow
|
...
How to add lines to end of file on Linux
...t the output of the echo by >>
echo 'VNCSERVERS="1:root"' >> /etc/sysconfig/configfile
echo 'VNCSERVERARGS[1]="-geometry 1600x1200"' >> /etc/sysconfig/configfile
share
|
improve ...
How to test my servlet using JUnit
...r things like HttpServletRequest, HttpServletResponse, HttpServletSession, etc:
http://static.springsource.org/spring/docs/3.0.x/api/org/springframework/mock/web/package-summary.html
Using these mocks, you could test things like
What happens if username is not in the request?
What happens if use...
Why is using the JavaScript eval function a bad idea?
... for injection attacks
Debugging can be more challenging
(no line numbers, etc.)
eval'd code executes slower (no opportunity to compile/cache eval'd code)
Edit: As @Jeff Walden points out in comments, #3 is less true today than it was in 2008. However, while some caching of compiled scripts may ha...
Performing a Stress Test on Web Application?
...o create a request, how to create an assertion, how to work with variables etc).
Very scalable. I've run tests with 11 machines generating load on the server to the tune of almost a million hits/hour. It was much easier to setup than I was expecting.
Has an active community and good resources to hel...
What is an OS kernel ? How does it differ from an operating system? [closed]
...le users to get something done (i.e compiler, text editor, window manager, etc).
share
|
improve this answer
|
follow
|
...
Using Emacs to recursively find and replace in text files not already open
...eplace-regexp: SPACE to replace and move to next match, n to skip a match, etc.
Press C-x s to save buffers. (You can then press y, n or ! to save all at once)
share
|
improve this answer
...
What is stack unwinding?
...manage resources like memory, database connections, open file descriptors, etc. in C++.
Now that allows us to provide exception safety guarantees.
share
|
improve this answer
|
...