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Nullable vs. int? - Is there any difference?
...d override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Entity<MyEntity>().Property(x => x.MyNullableInt).IsOptional();
}
}
On the other hand, if you declare your entity like:
public class MyEntity
{
pub...
Attach IntelliJ IDEA debugger to a running Java process
...at-juli.jar
Java Options:
-Dcatalina.home=C:\tomcat
-Dcatalina.base=C:\tomcat
-Djava.io.tmpdir=C:\tomcat\temp
-Djava.util.logging.config.file=C:\tomcat\conf\logging.properties
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:8000
Java 9 options:
--add-...
How do I convert CamelCase into human-readable names in Java?
...onversion is done a lot of times this method is much faster than the regex-based one: this is my benchmark for executing the aforementioned tests 100,000 times: ``` regex-based method took 4820 milliseconds ////////// commons-lang-based method took 232 milliseconds ``` that's about 20 times faster...
Cosine Similarity between 2 Number Lists
...
another version based on numpy only
from numpy import dot
from numpy.linalg import norm
cos_sim = dot(a, b)/(norm(a)*norm(b))
share
|
im...
What is the order of precedence for CSS?
...t relevant to an element and, therefore, will be
applied. Specificity is based on the matching rules which are composed
of different sorts of CSS selectors.
Specificity is a weight that is applied to a given CSS declaration,
determined by the number of each selector type in the matching
...
Static variables in JavaScript
...
If you come from a class-based, statically typed object-oriented language (like Java, C++ or C#) I assume that you are trying to create a variable or method associated to a "type" but not to an instance.
An example using a "classical" approach, with...
Reasons for using the set.seed function
...ackage allows you to set the seed (or choose a seed to pass into set.seed) based on a character string. For example you could have students use their name as the seed then each student has a unique dataset but the instructor can also create the same datasets for grading.
– Gre...
How to remove all .svn directories from my application directories
... By running the second command including ls, I get entries prop-base props text-base tmp output...
– Rasoul
Oct 26 '15 at 16:37
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DbEntityValidationException - How can I easily tell what caused the error?
... override int SaveChanges()
{
try
{
return base.SaveChanges();
}
catch (DbEntityValidationException ex)
{
// Retrieve the error messages as a list of strings.
var errorMessages = ex.EntityValidationErrors
...
Store pictures as files or in the database for a web app?
...
Store the pictures on the file system and picture locations in the database.
Why? Because...
You will be able to serve the pictures as static files.
No database access or application code will be required to fetch the pictures.
The images could be served from a different server to improve p...