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How do I check two or more conditions in one ?
How do I check two conditions in one <c:if> ? I tried this, but it raises an error:
4 Answers
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What does “|=” mean? (pipe equal operator)
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|= reads the same way as +=.
notification.defaults |= Notification.DEFAULT_SOUND;
is the same as
notification.defaults = notification.defaults | Notification.DEFAULT_SOUND;
where | is the bit-wise OR operator.
All operators are referenced here.
A bit...
Is there a more elegant way of adding an item to a Dictionary safely?
... add key/object pairs to a dictionary, but I of course need to first check if the key already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky.
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How do I associate a Vagrant project directory with an existing VirtualBox VM?
... your "Vagrantfile" to track the UUID of your VM. This file will not exist if a VM does not exist. The format of the file is JSON. It looks like this if a single VM exists:
{
"active":{
"default":"02f8b71c-75c6-4f33-a161-0f46a0665ab6"
}
}
default is the name of the default virtual mac...
How to automatically indent source code?
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Side note: shortcut depends on your keyboard layout, so if one does not work - check what Edit->Advanced says. Indeed you can customize it to you liking in Tools->Options->Environment->Keyboard.
– Alexei Levenkov
Jun 24 '15 at 17...
Grouping functions (tapply, by, aggregate) and the *apply family
... ?apply). There are enough of them, though, that beginning useRs may have difficulty deciding which one is appropriate for their situation or even remembering them all. They may have a general sense that "I should be using an *apply function here", but it can be tough to keep them all straight at fi...
Overriding a JavaScript function while referencing the original
...o something like this:
var a = (function() {
var original_a = a;
if (condition) {
return function() {
new_code();
original_a();
}
} else {
return function() {
original_a();
other_new_code();
}
}
})();
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How to configure slf4j-simple
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Actually it (defaultLogLevel) works.Just found I was modifying the program in a wrong folder ;-) And defaultlog doesn't work. So you probably want to edit your answer though I've accepted it
– Gelin Luo
Jan 27 '13 at 10:08
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Purpose of Django setting ‘SECRET_KEY’
....SECRET_KEY)
contrib/messages/storage/cookie.py:112: SECRET_KEY, modified to make it unique for the present purpose.
contrib/messages/storage/cookie.py:114: key = 'django.contrib.messages' + settings.SECRET_KEY
contrib/sessions/backends/base.py:89: pickled_md5 = md5_constructor(...
How do I list the symbols in a .so file
How do I list the symbols being exported from a .so file? If possible, I'd also like to know their source (e.g. if they are pulled in from a static library).
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