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.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...
ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
...where I was needing to update records in a many to many with a custom join table in a disconnected app. Even with the entity grabbed from the database, I was getting referential errors, etc. I was using "context.Entry(score).State = System.Data.Entity.EntityState.Modified;" but this finally worked...
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 ...
Daylight saving time and time zone best practices [closed]
...se location for systematic date-time conversion (say .NET culture or a SQL table) but provide a way for end-user to choose overrides if date-time is critical for your users.
If there are historical audit obligations involved (like telling exactly when Jo in AZ paid a bill 2 yrs ago in September) th...
What's the bad magic number error?
...or run the command above, after verifying you're not doing something regrettable.
– michael
Aug 11 '16 at 23:45
9
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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 ...
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...
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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