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php - get numeric index of associative array
...a)));
You will always get 0, which is wrong, so the solution would be to cast the index (if you use a variable) to a string like this:
$ind = 0;
echo array_search((string)$ind, array_map("strval", array_keys($a)));
share...
How do I remove the “extended attributes” on a file in Mac OS X?
...Script script that runs a stress test. Part of the test is to open, save, and close certain files. Somehow, the files have picked up some "extended attributes" that prohibit the files from being saved. That causes the stress test to fail.
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Can't install PIL after Mac OS X 10.9
I've just updated my Mac OS to 10.9 and I discovered that some (all?) of my Python modules are not here anymore, especially the Image one.
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John Carmack's Unusual Fast Inverse Square Root (Quake III)
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Casting the pointer to long is an approximation of log_2(float). Casting it back is an approximation of 2^long. This means that you can make the ratio approximately linear.
– wizzwizz4
S...
How much faster is C++ than C#?
...td::chrono::steady_clock::now();
auto initTime = std::chrono::duration_cast<std::chrono::microseconds>(initFinish - initStart);
auto fillStart = std::chrono::steady_clock::now();
for(auto i = 0, r = 0; r < ROWS; ++r)
{
for (auto c = 0; c < COLS; ++c)
{
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How accurate is python's time.sleep()?
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Yes you are right, I tried with Linux 2.6.24-24 and was able to get pretty close to 1000 Hz update rates. At the time I was doing this I was also running the code on Mac and Windows, so I probably got confused. I know windows XP at least has a tick rate of about 10ms.
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Python exit commands - why so many and when should each be used?
It seems that python supports many different commands to stop script execution. The choices I've found are: quit() , exit() , sys.exit() , os._exit()
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How do I best silence a warning about unused variables?
...me in C++. If it's templated, it won't be used in C, so you don't need the cast-to-void trick.
– Alex B
Oct 7 '13 at 4:55
13
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Do interfaces inherit from Object class in java
...bject will also accept a reference of any interface type. Moreover you can cast interface to an Object implicitly without any compiler error.
– nme
Feb 10 '19 at 14:03
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How can I remove a trailing newline?
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Try the method rstrip() (see doc Python 2 and Python 3)
>>> 'test string\n'.rstrip()
'test string'
Python's rstrip() method strips all kinds of trailing whitespace by default, not just one newline as Perl does with chomp.
>>> 'test string \n \r\...