大约有 48,000 项符合查询结果（耗时：0.0648秒） [XML]
How to use sed/grep to extract text between two words?
...
|
show 7 more comments
182
...
How can you profile a Python script?
... the interpreter, like this:
import cProfile
cProfile.run('foo()')
Even more usefully, you can invoke the cProfile when running a script:
python -m cProfile myscript.py
To make it even easier, I made a little batch file called 'profile.bat':
python -m cProfile %1
So all I have to do is run:...
find -exec cmd {} + vs | xargs
Which one is more efficient over a very large set of files and should be used?
3 Answers
...
How to execute a bash command stored as a string with quotes and asterisk [duplicate]
... it's naked or in double quoted strings: use single quotes.
MYSQL='mysql AMORE -u username -ppassword -h localhost -e'
QUERY="SELECT "'*'" FROM amoreconfig" ;# <-- "double"'single'"double"
eval $MYSQL "'$QUERY'"
Bonus: It also reads nice: eval mysql query ;-)
...
How can you use an object's property in a double-quoted string?
..." # yields "3"
PowerShell only expands variables in those cases, nothing more. To force evaluation of more complex expressions, including indexes, properties or even complete calculations, you have to enclose those in the subexpression operator $( ) which causes the expression inside to be evaluat...
android splash screen sizes for ldpi,mdpi, hdpi, xhdpi displays ? - eg : 1024X768 pixels for ldpi
... relative sizes of devices on Google's dashboard which is available here.
More information on multiple screens can be found here.
9 Patch image
The best solution is to create a nine-patch image so that the image's border can stretch to fit the size of the screen without affecting the static area ...
Is it bad to have my virtualenv directory inside my git repository?
...
|
show 6 more comments
51
...
Difference between Observer, Pub/Sub, and Data Binding
... observers one observable can notify.
Pub/Sub
Another name (perhaps with more "broadcast" semantics) of the Observable/Observer pattern, which usually implies a more "dynamic" flavor - observers can subscribe or unsubscribe to notifications and one observable can "shout out" to multiple observers....
How can I hash a password in Java?
...TheTosters Yes, the execution time will be longer for incorrect passwords; more specifically, wrong passwords will take the same time as correct passwords. It prevents timing attacks, although I confess I can't think of a practical way to exploit such a vulnerability in this case. But you don't cut ...
What are file descriptors, explained in simple terms?
...
|
show 11 more comments
125
...