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Is there a destructor for Java?
...g a handle to native resources like sockets, file handles, window handles, etc. When the garbage collector collects an object without a finalizer it simply marks the memory region as free and that's it. When the object has a finalizer, it's first copied into a temporary location (remember, we're gar...
Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
...context at all (the message itself is independent of the protocol used to fetch it, whether it's POP3, IMAP, Exchange, uucp or whatever) so the URL has no protocol to be relative to. I've not investigated compatibility with email clients to see what they do when presented with a missing protocol han...
Indenting #defines
I know that #define s, etc. are normally never indented. Why?
8 Answers
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Using margin:auto to vertically-align a div
...ude these rules in an IE-specific stylesheet by using conditional comments etc.
– o.v.
Sep 15 '12 at 2:10
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When to use Amazon Cloudfront or S3
...d when you use Amazon S3.
However, after a file expires, CloudFront will fetch it again from your live site (at cost). So cloud front is best for frequently accessed files, and less so for infrequently accessed ones.
One way to set the file expiry for apache is in .htaccess. For example
<files...
Best practices for storing postal addresses in a database (RDBMS)?
... It also has a nice set of administrative areas ( province, state, oblast, etc ) with ISO codes.
Here's the gist of the schema, copied from the module page:
country => Country (always required, 2 character ISO code)
name_line => Full name (default name entry)
first_name => First name
las...
Why are variables “i” and “j” used for counters?
... real. This meant that I was the first integer variable, and J the second, etc., so they fell towards use in loops.
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answered Nov 9 '10 at 19:48
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Practical uses for AtomicInteger
...two main uses of AtomicInteger:
As an atomic counter (incrementAndGet(), etc) that can be used by many threads concurrently
As a primitive that supports compare-and-swap instruction (compareAndSet()) to implement non-blocking algorithms.
Here is an example of non-blocking random number generator...
Rails: where does the infamous “current_user” come from?
...requisites to using current_user (like the existence of sessions, users, etc)?
2 Answers
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How does a debugger work?
...rface Access SDK.
If you are debugging a managed environment (.NET, Java, etc.) the process will typically look similar, but the details are different, as the virtual machine environment provides the debug API rather than the underlying OS.
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