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Choosing the best concurrency list in Java [closed]
...es tend to make the most sense for many of the types of things you want to do with a shared data structure.
For queues, you have a huge number of options and which is most appropriate depends on how you need to use it:
ConcurrentLinkedQueue
ArrayBlockingQueue
LinkedBlockingDeque
LinkedBlockingQue...
rsync: difference between --size-only and --ignore-times
...ry good.
For local files, rsync compares metadata and if it looks like it doesn't need to copy the file because size and timestamp match between source and destination it doesn't look further. If they don't match, it cp's the file. However, what if the metadata do match but files aren't actually th...
Hide div after a few seconds
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This is better beacause I don't have to use setTimeoutand code is easier to read.
– Marek Bar
Oct 7 '12 at 15:58
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Practical non-image based CAPTCHA approaches?
...at I have developed and which seems to work perfectly (although I probably don't get as much comment spam as you), is to have a hidden field and fill it with a bogus value e.g.:
<input type="hidden" name="antispam" value="lalalala" />
I then have a piece of JavaScript which updates the valu...
What is the HEAD in git?
...ify commits - this is just one tiny piece. kernel.org/pub/software/scm/git/docs/…
– Cascabel
Mar 27 '10 at 16:43
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Can I have an IF block in DOS batch file?
In a DOS batch file we can only have 1 line if statement body? I think I found somewhere that I could use () for an if block just like the {} used in C-like programming languages, but it is not executing the statements when I try this. No error message either. This my code:
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C++ : why bool is 8 bits long?
...t is, it must be possible to retrieve the address of an object. The object doesn't have to store its own address. A char is typically 8 bits wide, enough to store any of 256 characters, but each char also has an address defined by where in memory it is located. That is why you can create a pointer t...
django unit tests without a db
...ngo unittests without setting up a db? I want to test business logic which doesn't require the db to set up. And while it is fast to setup a db, I really don't need it in some situations.
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Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path
...mmand:
keytool -list -keystore "%JAVA_HOME%/jre/lib/security/cacerts" (you don't need to provide a password)
If your certificate is missing, you can get it by downloading it with your browser and add it to the truststore with the following command:
keytool -import -noprompt -trustcacerts -alias &l...
Wrapping chained method calls on a separate line in Eclipse for Java
...nting Deepak Azad's answer, what you exactly need is the following:
Windows: Window → Preferences → Java → Code Style
→ Formatter → Edit → Line wrapping (tab)
Mac OS: ADT → Preferences → Java → Code Style
→ Formatter → Edit → Line wrapping (tab)
Then, in the ...