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Fragment lifecycle - which method is called upon show / hide?
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Similar to activity lifecycle, Android calls onStart() when fragment becomes visible. onStop()...
How to add /usr/local/bin in $PATH on Mac
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While you can do this, it's not the OS X way. Paths on OS X are built using /usr/libexec/path_helper, called from the default /etc/profile. Start at man path_helper then add your paths in files in /etc/paths.d. You will find that pretty much every path setting ...
How to suppress scientific notation when printing float values?
...s really what you want? I don't: >>> print('{:f}'.format(0.000000123)) 0.000000
– duality_
May 22 '18 at 10:06
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What is a mutex?
...ople hoilding the mu.. chicken are competing threads. The Moderator is the OS. When people requests the chicken, they do a lock request. When you call mutex.lock(), your thread stalls in lock() and makes a lock request to the OS. When the OS detects that the mutex was released from a thread, it mere...
Java: parse int value from a char
...n be converted into int(0 to 9), e.g., '5'-'0' gives int 5.
String str = "123";
int a=str.charAt(1)-'0';
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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 ...
What's the meaning of Base SDK, iOS deployment target, Target, and Project in xcode
...base SDK to 7, what does it mean? It could mean that the app would run on iOS 7. But that's what iOS deployment target is for.
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what happens when you type in a URL in browser [closed]
...is is an extremely rough and oversimplified sketch, assuming the simplest possible HTTP request (no HTTPS, no HTTP2, no extras), simplest possible DNS, no proxies, single-stack IPv4, one HTTP request only, a simple HTTP server on the other end, and no problems in any step. This is, for most contempo...
How do I access command line arguments in Python?
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import sys
sys.argv[1:]
will give you a list of arguments (not including the name of the py...