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How do I check two or more conditions in one ?
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If you are using JSP 2.0 and above It will come with the EL support:
so that you can write in plain english and use and with empty operators to write your test:
<c:if test="${(empty object_1.attribute_A) and (empty object_2.attribute_B)}">
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What Content-Type value should I send for my XML sitemap?
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The difference between text/xml and application/xml is the default character encoding if the charset parameter is omitted:
Text/xml and application/xml behave differently when the charset
parameter is not explicitly specified. If the default charset ...
Is it possible to focus on a using JavaScript focus() function?
...e correct answer. in my case, I want to focus on an 'contentEditable' div, and your trick doesn't help.
– arnaudambro
Jun 6 '18 at 13:40
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What does `kill -0 $pid` in a shell script do?
... 0 to a given PID just checks if any process with the given PID is running and you have the permission to send a signal to it.
For more information see the following manpages:
kill(1)
$ man 1 kill
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If sig is 0, then no signal is sent, but error checking is still performed.
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kill(2)
$ man...
error: Unable to find vcvarsall.bat
...on or the purpose-built Microsoft Visual C++ Compiler for Python (details) and NOT using the original answer below. Original error message means the required version of Visual C++ is not installed.
For Windows installations:
While running setup.py for package installations, Python 2.7 searches f...
Argparse: Required arguments listed under “optional arguments”?
...sually considered optional. All other parameters are positional parameters and as such required by design (like positional function arguments). It is possible to require optional arguments, but this is a bit against their design. Since they are still part of the non-positional arguments, they will s...
Eclipse compilation error: The hierarchy of the type 'Class name' is inconsistent
I have downloaded some open source software written in Java and tried to compile it using Eclipse.
I got the error: " The hierarchy of the type 'Class name' is inconsistent " in some files.
What causes these errors and how do I fix them?
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Android: How can I pass parameters to AsyncTask's onPreExecute()?
...xactly what I did now. I still need a member variable but in the AsyncTask and not the outer class if that's what you mean. This is what I did: private class MyAsyncTask extends AsyncTask<Void, Void, Void> { private boolean showLoading; public MyAsyncTask(boolean showLoading) { ...
RVM is not working in ZSH
I'd like to try out the ZSH shell on my Mac, but I also do a lot of Ruby and Rails development, so I use RVM quite a bit too. The problem is that I can't seem to get RVM to work in ZSH, and it's working fine in the default Bash shell:
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ADB Android Device Unauthorized
Since I reinstalled Eclipse (simply deleted and downloaded it again) I can't debug my applications on Samsung Galaxy i9001 (with CyanogenMod - Android 4.4.2). It worked fine before reinstallation.
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