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How do I grep for all non-ASCII characters?
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This won't work in BSD grep (on OS X 10.8 Mountain Lion), as it does not support the P option.
– Bastiaan M. van de Weerd
Oct 22 '12 at 9:54
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What is a semaphore?
...hared resources - you can use them that way, but it may cause hard to diagnose bugs.
While mutexes and semaphores have some similarities in their implementation, they should always be used differently.
The most common (but nonetheless incorrect) answer to the question posed at the top is that mutex...
Which, if any, C++ compilers do tail-recursion optimization?
..., 4.7 and 4.8 targeting various platforms) is enabled at levels -O2, -O3, -Os.
– FooF
Jan 10 '14 at 6:53
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How can I get the version defined in setup.py (setuptools) in my package?
...rsion defined in setup.py from my package (for --version , or other purposes)?
16 Answers
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Display open transactions in MySQL
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4.5.1.6.3. Disabling mysql Auto-Reconnect
If the mysql client loses its connection to the server while sending a statement, it immediately and automatically tries to reconnect once to the server and send the statement again. However, even if mysql succeeds in reconnecting, your first con...
How do you get the list of targets in a makefile?
...t command to extract the target names, which hopefully prevents any false positives (and also does away with the unnecessary sh -c)
does not invariably target the makefile in the current directory; respects makefiles explicitly specified with -f <file>
excludes hidden targets - by convention, ...
How to copy an object in Objective-C
...t by bit - we want an object that behaves the same for all intents and purposes, but isn't (necessarily) a memory-identical clone of the original - the Objective C manual calls such an object "functionally independent" from it's original. Because the mechanisms for making these "intelligent" copies ...
How to turn on front flash light programmatically in Android?
...D you can refer Can I change the LED intensity of an Android device? full post. Note that only rooted HTC devices support this feature.
** Issues:**
There are also some problems while turning On/Off flashlight. eg. for the devices not having FLASH_MODE_TORCH or even if it has, then flashlight does...
Differences between Oracle JDK and OpenJDK
...e Java specification passed the TCK (Java Technology Certification Kit).
Most of the vendors of JDK are written on top of OpenJDK by doing a few tweaks to [mostly to replace licensed proprietary parts / replace with more high-performance items that only work on specific OS] components without break...
Why is the JVM stack-based and the Dalvik VM register-based?
...people are installing Android on their laptops since it's a "light-weight" os... That seems like a bad idea if the laptop is not ARM, and perhaps has an architecture with many registers?
– aioobe
Apr 27 '10 at 7:55
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