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Repeat a task with a time delay?
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You should use Handler's postDelayed function for this purpose. It will run your code with specified delay on the main UI thread, so you will be able to update UI controls.
private int mInterval = 5000; // 5 seconds by default, can be changed later
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How can I shuffle the lines of a text file on the Unix command line or in a shell script?
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You can use shuf. On some systems at least (doesn't appear to be in POSIX).
As jleedev pointed out: sort -R might also be an option. On some systems at least; well, you get the picture. It has been pointed out that sort -R doesn't really shuffle but instead sort items according to their hash ...
Python Requests and persistent sessions
...ests.Session()
After that, continue with your requests as you would:
s.post('https://localhost/login.py', login_data)
#logged in! cookies saved for future requests.
r2 = s.get('https://localhost/profile_data.json', ...)
#cookies sent automatically!
#do whatever, s will keep your cookies intact :)...
Is there a way to cache GitHub credentials for pushing commits?
I recently switched to synchronizing my repositories to https:// on GitHub (due to firewall issues), and it asks for a password every time.
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How can I launch multiple instances of MonoDevelop on the Mac?
...ew MonoDevelop instance to work on a different project on the Mac, and the OS is currently preventing me from opening a new instance.
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...ou will have typically have 1-8 cache locations for all of these. Thus almost all of those accesses will trigger an L1 cache eviction, and fetching of data from a slower cache or main memory.
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How does @synchronized lock/unlock in Objective-C?
...m is more complex and uses recursive locks, but it should get the point across.
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How can I read a whole file into a string variable
...buf := bytes.NewBuffer(nil)
for _, filename := range filenames {
f, _ := os.Open(filename) // Error handling elided for brevity.
io.Copy(buf, f) // Error handling elided for brevity.
f.Close()
}
s := string(buf.Bytes())
This opens each file, copies its contents into buf, then close...
How many socket connections can a web server handle?
Say if I was to get shared, virtual or dedicated hosting, I read somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP.
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seek() function?
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where fp is the file pointer you're working with; offset means how many positions you will move; from_what defines your point of reference:
0: means your reference point is the beginning of the file
1: means your reference point is the current file position
2: means your reference point is the e...