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Efficiency of Java “Double Brace Initialization”?

...2$8.class 2009/05/27 16:35 2,022 DemoApp2$9.class These are all classes which were generated when I was making a simple application, and used copious amounts of anonymous inner classes -- each class will be compiled into a separate class file. The "double brace initialization", as al...
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How can I clear the SQL Server query cache?

...CKPOINT; GO DBCC DROPCLEANBUFFERS; GO From the linked article: If all of the performance testing is conducted in SQL Server the best approach may be to issue a CHECKPOINT and then issue the DBCC DROPCLEANBUFFERS command. Although the CHECKPOINT process is an automatic internal system proce...
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How to select date from datetime column?

...20' has performance issues. As stated here: it will calculate DATE() for all rows, including those that don't match. it will make it impossible to use an index for the query. Use BETWEEN or >, <, = operators which allow to use an index: SELECT * FROM data WHERE datetime BETWEEN '2009-10-...
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Coloring white space in git-diff's output

...ght=new,old highlights whitespace errors on both deleted and added lines. all can be used as a short-hand for old,new,context. git diff --ws-error-highlight=new,old <file> or git diff --ws-error-highlight=all <file> I don't know of a way to permanently turn this on and store this...
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moveCamera with CameraUpdateFactory.newLatLngBounds crashes

... You can use simple newLatLngBounds method in OnCameraChangeListener. All will be working perfectly and you don't need to calculate screen size. This event occurs after map size calculation (as I understand). Example: map.setOnCameraChangeListener(new OnCameraChangeListener() { @Override...
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Automatically deleting related rows in Laravel (Eloquent ORM)

...(); static::deleting(function($user) { // before delete() method call this $user->photos()->delete(); // do the rest of the cleanup... }); } } You should probably also put the whole thing inside a transaction, to ensure the referential integrity...
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Browse orphaned commits in Git

...is open I think I'll give an answer to my own question. Using git reflog --all is a good way to browse orphaned commits - and using the SHA1 hashes from that you can reconstruct history. In my case though, the repository was corrupted so this didn't help; git fsck can help you find and sometimes fi...
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Remap values in pandas column with a dict

... It looks like this doesn't work anymore at all, which isn't surprising given the answer was from 4 years ago. This question needs a new answer given how general the operation is... – PrestonH Nov 21 '17 at 17:01 ...
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Difference between Inheritance and Composition

... is now considered a blunder. A stack "is-NOT-a" vector; you should not be allowed to insert and remove elements arbitrarily. It should've been composition instead. Unfortunately it's too late to rectify this design mistake, since changing the inheritance hierarchy now would break compatibility wit...
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Where does git config --global get written to?

...Vascellaro points out in the comments, it will work with non-standard install locations. (i.e. Git Portable) (like the latest PortableGit-2.14.2-64-bit.7z.exe, which can be uncompressed anywhere you want) Original answer (2010) From the docs: --global For writing options: write to global ~/.gitc...