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Number.sign() in javascript
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More elegant version of fast solution:
var sign = number?number<0?-1:1:0
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Difference between Repository and Service Layer?
... of writing
var context = new DatabaseContext();
return CreateObjectQuery<Type>().Where(t => t.ID == param).First();
to get a single item from database, you use repository interface
public interface IRepository<T>
{
IQueryable<T> List();
bool Create(T item);
bool...
Which is preferred: Nullable.HasValue or Nullable != null?
I always used Nullable<>.HasValue because I liked the semantics. However, recently I was working on someone else's existing codebase where they used Nullable<> != null exclusively instead.
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How to count the number of occurrences of an element in a List
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It was introduced in JDK 5 (although no one uses a version before that so it doesn't matter) docs.oracle.com/javase/8/docs/technotes/guides/collections/…
– Minion Jim
Mar 2 '19 at 15:49
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SQL WHERE condition is not equal to?
...DELETE FROM table WHERE id NOT IN ( 2 )
OR
DELETE FROM table WHERE id <> 2
As @Frank Schmitt noted, you might want to be careful about the NULL values too. If you want to delete everything which is not 2(including the NULLs) then add OR id IS NULL to the WHERE clause.
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Parsing JSON array into java.util.List with Gson
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Definitely the easiest way to do that is using Gson's default parsing function fromJson().
There is an implementation of this function suitable for when you need to deserialize into any ParameterizedType (e.g., any List), which is fromJson(JsonElement json, Type typeOfT).
In your...
Django : How can I see a list of urlpatterns?
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admin/password_change/
admin/password_change/done/
admin/jsi18n/
admin/r/<int:content_type_id>/<path:object_id>/
admin/auth/group/
admin/auth/group/add/
admin/auth/group/autocomplete/
admin/auth/group/<path:object_id>/history/
admin/auth/group/<path:object_id>/delete/
admin/...
ContractFilter mismatch at the EndpointDispatcher exception
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A "ContractFilter mismatch at the EndpointDispatcher" means the receiver could not process the message because it did not match any of the contracts the receiver has configured for the endpoint which received the message.
This can be bec...
How do I use valgrind to find memory leaks?
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How to Run Valgrind
Not to insult the OP, but for those who come to this question and are still new to Linux—you might have to install Valgrind on your system.
sudo apt install valgrind # Ubuntu, Debian, etc.
sudo yum install valgrind # RHEL, CentOS, ...
Add Text on Image using PIL
...se following function to change font values.
# font = ImageFont.truetype(<font-file>, <font-size>)
# font-file should be present in provided path.
font = ImageFont.truetype("sans-serif.ttf", 16)
So your code will look something similar to:
from PIL import Image
from PIL import ImageF...