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Adding n hours to a date in Java?
... as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 & Java 9. See Tutorial by Oracle.
– Basil Bourque
Mar 25 '18 at 18:48
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How to export collection to CSV in MongoDB?
...hemaless; CSV, on the other hand, has a fixed layout for columns. Without knowing what fields are used in different documents it's impossible to output the CSV dump.
If you have a fixed schema perhaps you could retrieve one document, harvest the field names from it with a script and pass it to mong...
How to show SQL queries run in the Rails console?
...raw query to explain and analyze. I guess will have to do with explain for now.
– abhishek77in
Jun 5 at 8:20
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When is it acceptable to call GC.Collect?
...bjects - particularly those you suspect to be in generations 1 and 2 - are now eligible for garbage collection, and that now would be an appropriate time to collect in terms of the small performance hit.
A good example of this is if you've just closed a large form. You know that all the UI controls...
Convert php array to Javascript
...d be sensible for someone reading this question to use a library that was known to be secure and well tested, eg from Pear rather than just taking this code on merit. Also, it's worth pointing out that PHP 5.2 was already out of support when this question was asked. As I write now, it has been unsup...
Symfony 2 EntityManager injection in service
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Update to my own solution. The proper way now should be to use Entities and Repositories. Entity Manager is already naturally injected into a repository. You can see an example here: youtu.be/AHVtOJDTx0M
– Robert Saylor
Oct 1 '1...
How do I diff the same file between two different commits on the same branch?
...>...]
For instance, to see the difference for a file "main.c" between now and two commits back, here are three equivalent commands:
$ git diff HEAD^^ HEAD main.c
$ git diff HEAD^^..HEAD -- main.c
$ git diff HEAD~2 HEAD -- main.c
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How to install PostgreSQL's pg gem on Ubuntu?
...-dev
helped me - after that ran gem install pg -v "0.14.1", and all good now
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Get child node index
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@sfarbota Javascript doesn't know block scoping, so i will be accesible.
– A1rPun
Sep 22 '14 at 15:12
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How to do a newline in output
... Thanks for the answer, makes me look like a fool but atleast I now know
– babyrats
Jan 13 '10 at 21:18
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