大约有 41,000 项符合查询结果（耗时：0.0469秒） [XML]
Objective-C: Where to remove observer for NSNotification?
I have an objective C class. In it, I created a init method and set up a NSNotification in it
14 Answers
...
chrome undo the action of “prevent this page from creating additional dialogs”
... I need to re-enable alerting for debugging. Of course I can close the tab and reload it but Is there a better way?
7 Answ...
Using sed and grep/egrep to search and replace
...
Use this command:
egrep -lRZ "\.jpg|\.png|\.gif" . \
| xargs -0 -l sed -i -e 's/\.jpg\|\.gif\|\.png/.bmp/g'
egrep: find matching lines using extended regular expressions
-l: only list matching filenames
-R: search recursively th...
What should I use Android AccountManager for?
I've seen AccountManager in the Android SDK and that it is used for storing account information. Thus, I cannot find any general discussion of what it is intended for. Does anyone know of any helpful discussions of what the intention behind AccountManager is and what it buys you? Any opinions of wha...
How to exit from PostgreSQL command line utility: psql
What command or short key can I use to exit the PostgreSQL command line utility psql ?
9 Answers
...
iPhone app in landscape mode, 2008 systems
Please note that this question is from 2008 and now is of only historic interest.
8 Answers
...
Random Gaussian Variables
Is there a class in the standard library of .NET that gives me the functionality to create random variables that follow Gaussian distribution?
...
What is thread contention?
...he most obvious example of contention is on a lock. If thread A has a lock and thread B wants to acquire that same lock, thread B will have to wait until thread A releases the lock.
Now, this is platform-specific, but the thread may experience slowdowns even if it never has to wait for the other th...
How do I get a human-readable file size in bytes abbreviation using .NET?
... to do it, but it's easier to read if you are not familiar with log maths, and should be fast enough for most scenarios.
string[] sizes = { "B", "KB", "MB", "GB", "TB" };
double len = new FileInfo(filename).Length;
int order = 0;
while (len >= 1024 && order < sizes.Length - 1) {
o...
On - window.location.hash - Change?
I am using Ajax and hash for navigation.
13 Answers
13
...