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Swapping two variable value without using third variable
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*x ^= *y;
}
}
Why the test?
The test is to ensure that x and y have different memory locations (rather than different values). This is because (p xor p) = 0 and if both x and y share the same memory location, when one is set to 0, both are set to 0.
When both *x and *y are 0, all o...
ERROR: Error installing capybara-webkit:
...s libqt4-dev libqt4-core libqt4-gui
If you are on Mac
brew install qt
and then
gem install capybara-webkit -v '0.11.0'
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What do people think of the fossil DVCS? [closed]
fossil http://www.fossil-scm.org
I found this recently and have started using it for my home projects. I want to hear what other people think of this VCS.
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Difference between “on-heap” and “off-heap”
Ehcache talks about on-heap and off-heap memory. What is the difference? What JVM args are used to configure them?
6 Answ...
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
...e installed Oracle 11g Express Edition Release 2 in my windows 7 64 bit OS and tried to execute JDBC program, then I got the following error:
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Read/Write String from/to a File in Android
...Text. Then I want the same file to return the inputted text in String form and save it to another String which is to be used later.
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Node.js project naming conventions for files & folders
What are the naming conventions for files and folders in a large Node.js project?
7 Answers
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BackgroundWorker vs background Thread
...a form that has an infinite (while(true)) loop. In this loop I use WaitHandle.WaitAny to keep the thread snoozing until something of interest happens. One of the event handles I wait on is a " StopThread " event so that I can break out of the loop. This event is signaled when from my overridden ...
Setting PATH environment variable in OSX permanently
...ly solution that works on El Capitan. Better than modifying .bash_profile and .profile.
– IgorGanapolsky
Nov 29 '15 at 21:06
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apache to tomcat: mod_jk vs mod_proxy
What are the advantages and disadvantages of using mod_jk and mod_proxy for fronting a tomcat instance with apache?
3 A...