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What is the Auto-Alignment Shortcut Key in Eclipse?
...ift+F to invoke the Auto Formatter
Ctrl+I to indent the selected part (or all) of you code.
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Do scala constructor parameters default to private val?
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In case classes all parameters will become "public" val.
– drexin
Feb 4 '13 at 20:21
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What's invokedynamic and how do I use it?
I keep hearing about all the new cool features that are being added to the JVM and one of those cool features is invokedynamic. I would like to know what it is and how does it make reflective programming in Java easier or better?
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How to add a downloaded .box file to Vagrant?
...hing in the Vagrantfile. I am just using the Vagrantfile that got automatically created upon vagrant init. When i cat Vagrantfile, I don't see anything called a password or pem or anything
– Rakib
Sep 15 '15 at 12:31
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What does static_assert do, and what would you use it for?
...fined (as one would expect in a C++ library).
Contrast with having to actually compile SomeLibrary and your code, link everything, and run the executable only then to find out that you spent 30 minutes compiling an incompatible version of SomeLibrary.
@Arak, in response to your comment: yes, you ...
Comparison of C++ unit test frameworks [closed]
... few questions regarding recommendations for C++ unit test frameworks, but all the answers did not help as they just recommend one of the frameworks but do not provide any information about a (feature) comparison.
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How do you test a public/private DSA keypair?
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This solution seems to work for all types of SSH-keys. I even managed to recover a misplaced public key with this approach.
– Jari Turkia
Jun 13 '18 at 6:37
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What is the difference between ELF files and bin files?
...ded loader format ELf file ,what is the difference between the two , especially the utility of ELF file.
4 Answers
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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
... Communications link failure, then it means that the DB isn't reachable at all. This can have one or more of the following causes:
IP address or hostname in JDBC URL is wrong.
Hostname in JDBC URL is not recognized by local DNS server.
Port number is missing or wrong in JDBC URL.
DB se...
Why is auto_ptr being deprecated?
...cs and the magic of rvalue references, it can do so considerably more naturally. It also "fits" with the rest of the standard library considerably better (though, in fairness, some of that is thanks to the rest of the library changing to accommodate move semantics instead of always requiring copying...