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How to track down a “double free or corruption” error
...e() call visible in the backtrace.
see the man page for malloc() for more information
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php: determine where function was called from
...G_BACKTRACE_IGNORE_ARGS was very useful, without it there was way too many info.
– Arie
Nov 1 '17 at 12:38
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How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...arched everywhere how /usr/libexec/java_home works but I couldn't find any information on how it determines the available Java Virtual Machines it lists.
I've experimented a bit and I think it simply executes a ls /Library/Java/JavaVirtualMachines and then inspects the ./<version>/Contents/In...
Why doesn't “System.out.println” work in Android?
...g corresponding to the following levels:
e() - Error
w() - Warning
i() - Information
d() - Debug
v() - Verbose
wtf() - What a Terrible Failure
The documentation says the following about the levels:
Verbose should never be compiled into an application except during development. Debug logs are...
Tomcat: How to find out running tomcat version
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if you can upload a JSP file you may print out some info like in this example: bestdesigns.co.in/blog/check-jsp-tomcat-version
Save this code into a file called tomcat_version.jsp:
Tomcat Version : <%= application.getServerInfo() %><br>
Servlet Specif...
Adding an identity to an existing column
...uirements above.
UPDATE - Eric Wu had a comment below that adds important info about this solution. Copying it here to make sure it gets more attention:
There's another caveat here that is worth mentioning. Although the
new table will happily receive data from the old table, and all the
ne...
Get the client's IP address in socket.io
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Where did you get the info? I thought I had read all the docs for socket.io and did not see this. It worked perfectly to solve my problems similar to the OP.
– MikeB
Jun 13 '14 at 18:42
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How to terminate a window in tmux?
... If done remotely where tmux is running in some other terminal, one can do INFO=$(tmux new-window -P notepad) followed by tmux kill-window -t $INFO.
– Johann
May 16 '18 at 21:13
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Can't update Macports (with Mac OS X Mavericks)
...experience upgrading... not really a new answer, but hopefully some useful info.
I downloaded and installed the Mavericks MacPorts installer as described above, (but without removing /opt, as suggested by @King Julian did self update which was fine, and then upgrade outdated and it seems to be unin...
How to handle initializing and rendering subviews in Backbone.js?
...t;
<div id="name">Person: Kevin Peel</div>
<div id="info">
First name: <span class="first_name">Kevin</span><br />
Last name: <span class="last_name">Peel</span><br />
</div>
<div>Phone Numbers:</div...