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Rails: where does the infamous “current_user” come from?

... NOTE: If you're reading this answer, be sure to include return unless session[:user_id] as shown in Zach's answer -- without that, every if current_user check while signed out will trigger another database query. – Drea...
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What's the best mock framework for Java? [closed]

...annoying. Mockito removes this, also has a cleaner syntax as it looks like readability was one of its primary goals. I cannot stress enough how important this is, since most of developers will spend their time reading and maintaining existing code, not creating it. Another nice thing is that inter...
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How does a debugger work?

... how does a debugger work? Particulary the one that can be 'attached' to already running executable. I understand that compiler translates code to machine language, but then how does debugger 'know' what it is being attached to? ...
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Difference between Statement and PreparedStatement

...SQL string, e.g. Date, Time, Timestamp, BigDecimal, InputStream (Blob) and Reader (Clob). On most of those types you can't "just" do a toString() as you would do in a simple Statement. You could even refactor it all to using PreparedStatement#setObject() inside a loop as demonstrated in the utility ...
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What is the difference between re.search and re.match?

... a clever maneuver to seed the API's with unintuitive names to force me to read the documentation? I still won't do it! Rebel! – Sammaron Sep 16 '16 at 15:14 1 ...
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How do I get the path and name of the file that is currently executing?

...ile doesn't exist - the nearest alternative is exec(open(<filename>).read()), though this affects the stack frames. It's simplest to just use import foo and import lib.bar - no __init__.py files needed. See also Difference between import and execfile Original Answer: Here is an experiment...
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What does it mean that Javascript is a prototype based language?

... Please read this also developer.mozilla.org/en/JavaScript/Guide/… – pramodc84 Sep 28 '10 at 8:34 1 ...
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Real world use of JMS/message queues? [closed]

I was just reading abit about JMS and Apache ActiveMQ. And was wondering what real world use have people here used JMS or similar message queue technologies for ? ...
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How to access and test an internal (non-exports) function in a node.js module?

...g all existing modules with NODE_ENV specific exports, nor does it involve reading in the module as text. – Adam Yost Jul 22 '15 at 16:00 ...
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What are all the valid self-closing elements in XHTML (as implemented by the major browsers)?

...C Validator largely ignores that rule, but browsers follow it religiously. Read Understanding HTML, XML and XHTML from WebKit blog: In fact, the vast majority of supposedly XHTML documents on the internet are served as text/html. Which means they are not XHTML at all, but actually invalid HTML ...