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Exotic architectures the standards committees care about
I know that the C and C++ standards leave many aspects of the language implementation-defined just because if there is an architecture with other characteristics, it would be very difficult or impossible to write a standard conforming compiler for it.
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What is the difference between Non-Repeatable Read and Phantom Read?
...ransaction reads committed UPDATES from another transaction. The same row now has different values than it did when your transaction began.
Phantom reads are similar but when reading from committed INSERTS and/or DELETES from another transaction. There are new rows or rows that have disappeared s...
Running a cron every 30 seconds
...to enable the timer (not the service though) by running systemctl enable --now helloworld.timer (the --now flag also starts the timer immediately, otherwise, it will only start after the next boot, or user login).
The [Timer] section fields used here are as follows:
OnBootSec - start the service ...
Catching java.lang.OutOfMemoryError?
...same amount of allocated objects as before the unsuccessful allocation and now is the time to drop references to run-time objects to free even more memory that may be required for cleanup. In these cases, it may even be possible to continue but that would definitely be a bad idea as you can never be...
Discard all and get clean copy of latest revision?
...ome problems with those in other commands I was trying. I'll give it a try now...
– Rory
Feb 10 '11 at 13:41
7
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Single script to run in both Windows batch and Linux Bash?
...CHO OFF
GOTO :CMDSCRIPT
::CMDLITERAL
echo "I can write free-form ${SHELL} now!"
if :; then
echo "This makes conditional constructs so much easier because"
echo "they can now span multiple lines."
fi
exit $?
:CMDSCRIPT
ECHO Welcome to %COMSPEC%
Universal comments, of course, can be done with ...
How do I prevent node.js from crashing? try-catch doesn't work
...sn't work either since everything is done asynchronously. I would like to know what does everyone else do in their production servers.
...
Animate scroll to ID on page load
...<h2 id="title1">Some title</h2>
P.S. 'smooth' parameter now works from Chrome 61 as julien_c mentioned in the comments.
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Should I use @EJB or @Inject
...The @EJB is used to inject EJB's only and is available for quite some time now. @Inject can inject any managed bean and is a part of the new CDI specification (since Java EE 6).
In simple cases you can simply change @EJB to @Inject. In more advanced cases (e.g. when you heavily depend on @EJB's att...
SimpleTest vs PHPunit
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I prefer PHPUnit now, but when I started out I used SimpleTest as I didn't always have access to the command line. SimpleTest is nice, but the only thing it really has over PHPUnit, in my opinion, is the web runner.
The reasons I like PHPUn...