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How to hide databases that I am not allowed to access
...ct to my Heroku - Postgresql database via pgAdmin3 , It lists all the tables (about 2600). Every time I open the pgAdmin3 I have to find my own database.
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JPA: unidirectional many-to-one and cascading delete
...y parent's collection.
Or, specify the foreign key constraint in the child table as ON DELETE CASCADE. You'll need to invoke EntityManager.clear() after calling EntityManager.remove(parent) as the persistence context needs to be refreshed - the child entities are not supposed to exist in the persist...
.keyCode vs. .which
... this can make a big difference to most applications. For example, non-printable keys in Firefox have a which property of zero and the same keyCode property as keydown. The Home key has a keyCode of 36 on my PC in Firefox, which is the character code for "$", which would make it impossible to distin...
How was the first compiler written?
... possible to write a program in opcodes directly by looking them up from a table (such as this one for the 6039 microprocessor, for example) that lists them with the matching assembly instructions, and hand-determining memory addresses/offsets for things like jumps.
The first programs were done in ...
connecting to MySQL from the command line
...light security risk because it ends up in your command history and process tables. If you leave out the password it will ask you for it.
– dj_segfault
Feb 27 '11 at 7:16
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Lightweight XML Viewer that can handle large files [closed]
...useful as an editor, but it does a good job of displaying flat XML data as tables.
There are tons of free editors that do XML syntax highlighting, including vim, emacs, scite, eclipse (J2EE edition), jedit, notepad++.
For heavyweight XML features, like XPath support, XSLT editing and debugging, SO...
What's the best way to make a d3.js visualisation layout responsive?
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In the case that you are using a d3 wrapper like plottable.js, be aware that the easiest solution might be adding an event listener and then calling a redraw function (redraw in plottable.js). In the case of plottable.js this will work excellently (this approach is poorly docum...
Ignoring a class property in Entity Framework 4.1 Code First
...5847(v=vs.103).aspx
The version I checked is EF 4.3, which is the latest stable version available when you use NuGet.
Edit : SEP 2017
Asp.NET Core(2.0)
Data annotation
If you are using asp.net core (2.0 at the time of this writing), The [NotMapped] attribute can be used on the property level.
pub...
Is there a difference between single and double quotes in Java?
...2) Second we are adding the values of two char that according to the ASCII Table H=72 and a=97 that means that we are adding 72+97 it's like ('H'+'a').
3) Let's consider another case where we would have:
System.out.println("A"+'N');//AN
In this case we are dealing with concatenation of String A ...
When should I use semicolons in SQL Server?
... you must use the semicolon. The first situation is where you use a Common Table Expression (CTE), and the CTE is not the first statement in the batch. The second is where you issue a Service Broker statement and the Service Broker statement is not the first statement in the batch.
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