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Max return value if empty query
I have this query:
11 Answers
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Can an interface extend multiple interfaces in Java?
Can an interface extend multiple interfaces in Java? This code appears valid in my IDE and it does compile:
7 Answers
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How can I specify a local gem in my Gemfile?
I'd like Bundler to load a local gem. Is there an option for that? Or do I have to move the gem folder into the .bundle directory?
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Android Studio quick documentation always “fetching documentation”
...ching documentation" when I use quick documentation(Ctrl+Q),How to solve this?(I download documentation for API19,still problem)
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Devise - How do I forbid certain users from signing in?
I am using Devise for authentication in my application.
4 Answers
4
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Can I change the height of an image in CSS :before/:after pseudo-elements?
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Adjusting the background-size is permitted. You still need to specify width and height of the block, however.
.pdflink:after {
background-image: url('/images/pdf.png');
background-size: 10px 20px;
display: inline-block;
width: 10px;
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How do I get the SharedPreferences from a PreferenceActivity in Android?
...a a xml file so that my onCreate (and complete class methods) looks like this:
7 Answers
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Is iterating ConcurrentHashMap values thread safe?
In javadoc for ConcurrentHashMap is the following:
5 Answers
5
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What does 'foo' really mean?
I hope this qualifies as a programming question, as in any programming tutorial, you eventually come across 'foo' in the code examples. (yeah, right?)
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Can I use GDB to debug a running process?
Under linux, can I use GDB to debug a process that is currently running?
8 Answers
8
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