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What does jquery $ actually return?
...s all the special jQuery methods.
It never returns null, or another type. If one element is found, the jQuery object will have only one child. If no elements are found, the jQuery object will be empty.
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Set focus on textbox in WPF
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@user841612, check the following link and verify the Assembly and Namespace msdn.microsoft.com/en-us/library/…
– usefulBee
Feb 10 '16 at 22:03
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Passing multiple error classes to ruby's rescue clause in a DRY fashion
...operator *.
EXCEPTIONS = [FooException, BarException]
begin
a = rand
if a > 0.5
raise FooException
else
raise BarException
end
rescue *EXCEPTIONS
puts "rescued!"
end
If you are going to use a constant for the array as above (with EXCEPTIONS), note that you cannot define it w...
How do I execute a Git command without being in the repository?
...ccepted answer? This will use the current dir as work tree and use the specified .git for history, which is completely wrong. If you do not just show log, for example, git status. -C is the correct way to go.
– Wang
Mar 19 at 18:11
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Can clearInterval() be called inside setInterval()?
...de above and sometimes it is working, sometimes it is not. I am wondering if the clearInterval actually clear the timer?? because there is this monitor button that will only be disabled when it is in monitoring function. I have another clearInterval when an element called .outputRemove is ...
Does a dot have to be escaped in a character class (square brackets) of a regular expression?
...s website is a brilliant reference and has lots of info on the nuances of different regex flavours.
http://www.regular-expressions.info/refcharclass.html
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Are empty HTML5 data attributes valid?
...like to write a simple jQuery plugin that displays inline modals under specified elements. My idea is for the script to auto-init based on data attributes specified on elements.
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How to synchronize a static variable among threads running different instances of a class in Java?
...ur day. Also, class initialization runs with a lock on the class held, so if you've got crazy class initializers you can give yourself headaches. volatile doesn't help for count++ because it's a read / modify / write sequence. As noted in a different answer, java.util.concurrent.atomic.AtomicInte...
“find: paths must precede expression:” How do I specify a recursive search that also finds files in
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By way of example, you can see what's happening if you do echo *test.c ... the result won't be echo expanding the wildcard, but the shell itself. The simple lesson is if you're using wildcards, quote the filespec :-)
– Chris J
Jun 27 ...
What is a daemon thread in Java?
...M exits. B_erb said, "...when the program finishes." What that means is, if the program does not explicitly kill the JVM, then the JVM will automatically kill itself when the last non-daemon thread ends. Normal threads define "when the program exits." Daemon threads don't.
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