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Unique BooleanField value in Django?
...d that some of them address the same issue successfully and each one is suitable in different situations:
I would choose:
@semente: Respects the constraint at the database, model and admin form levels while it overrides Django ORM the least possible. Moreover it can probably be used inside a thr...
Include intermediary (through model) in responses in Django Rest Framework
...se SerializerMethodField on the object and explicitly query the Membership table like so:
class MembershipSerializer(serializers.ModelSerializer):
"""Used as a nested serializer by MemberSerializer"""
class Meta:
model = Membership
fields = ('id','group','join_date')
class ...
PHP: Storing 'objects' inside the $_SESSION
... it on every request. Then the server uses that ID as a key into a big hashtable of Session objects. Whenever the server gets a request, it looks up the Session info out of its hashtable of session objects based on the ID the client submitted with the request. All this extra work is a double whammy ...
How to avoid “RuntimeError: dictionary changed size during iteration” error?
... countless others), but it's not obvious to all. And I'll put money on the table it hasn't also bitten you in the rear :)
– Jon Clements♦
Aug 13 '12 at 21:06
...
Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul
...
Newer .Net Docs now has a table to help you decide which is best to use in your situation.
From MSDN's "New Recommendations for Using Strings in Microsoft .NET 2.0"
Summary: Code owners previously using the InvariantCulture for string comparison,...
SSO with CAS or OAuth?
... authorization, but it is not a substitute for the traditional 'USER_ROLES table' (user access). It handles authorization for third-parties.
For example, you want your application to integrate with Twitter: a user could allow it to tweet automatically when they update their data or post new content...
How to use LINQ to select object with minimum or maximum property value
...lower than the other solution suggested. However, if this is a LINQ to SQL table and DateOfBirth is an indexed column, then SQL Server will use the index instead of sorting all the rows. Other custom IEnumerable<T> implementations could also make use of indexes (see i4o: Indexed LINQ, or the o...
What are five things you hate about your favorite language? [closed]
...g it easy to prematurely execute an UPDATE or DELETE, destroying the whole table. Instead, the WHERE should go somewhere up front.
It's difficult to implement relational division.
I can set a value to NULL, but I can't test it for equality with NULL. I can check IS NULL, but that just complicates ...
What is the point of Lookup?
...
@KyleBaran Lookup<,> is simply an immutable collection (with no Add method for eg) which has a limited use. Furthermore, its not a general purpose collection in the sense that if you do lookup on a nonexistent key you get an empty sequence rather than an exceptio...
What is the AppDelegate for and how do I know when to use it?
...cations) or a document singleton (for single document applications)
Button/table/view controllers, view delegate methods or other view handling (except for construction of the top-level view in applicationDidFinishLaunching:) -- this work should be in respective view controller classes.
Many peop...