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What is the difference between instanceof and Class.isAssignableFrom(…)?
...ation, it might be possible to get a different result (and maybe different order!) on a different JAVA version and/or platforms like Solaris, Mac or Linux.
the benchmark compares the performance of "is B an instance of A" when "B extends A" directly. If the class hierarchy is deeper and more complex...
MySQL JOIN the most recent row only?
...at EXPLAIN indicates that this uses a temporary table and filesort. Adding ORDER BY NULL at the end weeds out the filesort.
– Timo
Dec 4 '15 at 9:11
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How to fix Error: laravel.log could not be opened?
...his should be the chosen answer, 100% agree that sysadmins should not just allow access to everything to avoid working out the real issue.
– HyperionX
Feb 8 '18 at 7:24
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Looping over arrays, printing both index and value
...., not splitting them on whitespace. If foo=(x 'y z'), then f "${foo[@]}" calls f with two arguments, x and 'y z'. Metadata queries like "${!foo[@]}" and "${#foo[@]}" similarly act on foo as an array.
– BallpointBen
Sep 5 '18 at 1:23
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How to create a new branch from a tag?
...your hotfix branch, It's time to move that branch to github, you can do so by writing below command
git push --set-upstream origin hotfix_4.4.3
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Changing navigation bar color in Swift
...far off with what I was trying but I didn't quite have things in the right order.
– user3746428
Jul 10 '14 at 22:59
I'...
How do you fix a bad merge, and replay your good commits onto a fixed merge?
... remove. It will then present you a list of the
rewound commits in reverse order in whatever editor git is set to use (this is
Vim by default):
pick 00ddaac Add symlinks for executables
pick 03fa071 Set `push.default` to `simple`
pick 7668f34 Modify Bash config to use Homebrew recommended PATH
pick...
Does Haskell require a garbage collector?
...1., and there is no manual deallocation operation as per 2. Therefore, in order to be useable for non-trivial things, a Haskell implementation needs to include a garbage collector.
I can't think of a case where GC would be necessary in a pure language.
Presumably you mean a pure functional la...
How do I check out a specific version of a submodule using 'git submodule'?
...anch, but it will NOT be updated as you update your primary repository. In order to change the submodule to track a particular commit or different branch, change directory to the submodule folder and switch branches just like you would in a normal repository.
git checkout -b some_branch origin/s...
How do I generate a random int number?
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In order to reuse it, you can declare rnd as static and/or set it just once when initializing the code.
– Junior Mayhé
Feb 10 '18 at 19:09
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