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Optimistic vs. Pessimistic locking
...abort the transaction and the user can re-start it.
This strategy is most applicable to high-volume systems and three-tier architectures where you do not necessarily maintain a connection to the database for your session. In this situation the client cannot actually maintain database locks as the ...
How to document thrown exceptions in c#/.net
... about you want to let go. Its the principal of failing fast--better your app to crash than enter a state where you might end up corrupting your data. The crash will tell you about what happened and why, which may help move that exception out of the "ones you don't know about" list.
The ones you ...
Refreshing OAuth token using Retrofit without modifying all calls
We are using Retrofit in our Android app, to communicate with an OAuth2 secured server. Everything works great, we use the RequestInterceptor to include the access token with each call.
However there will be times, when the access token will expire, and the token needs to be refreshed. When the toke...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
... secure system.
Let me illustrate my point: Imagine you are building a web application and you need to store some session data. You could assign each user a session ID and store the session data on the server in a hash map mapping session ID to session data. But then you have to deal with this pesky...
What are the differences between django-tastypie and djangorestframework? [closed]
Why would you use one over the other, for exposing an API for your Django app?
7 Answers
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Calling Objective-C method from C++ member function?
...be mixed. If you want to keep them separate, you can set up a standard C wrapper function that gives the Objective-C object a usable C-style interface from non-Objective-C code (pick better names for your files, I have picked these names for verbosity):
MyObject-C-Interface.h
#ifndef __MYOBJECT_C_...
Why is IoC / DI not common in Python?
...va IoC / DI is a very common practice which is extensively used in web applications, nearly all available frameworks and Java EE. On the other hand, there are also lots of big Python web applications, but beside of Zope (which I've heard should be really horrible to code) IoC doesn't seem to be ...
What is the purpose of “return await” in C#?
...can still write async code this way which will work nicely called from 4.5 apps.
– ghord
Sep 23 '14 at 11:38
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Difference between “@id/” and “@+id/” in Android
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@+id/foo means you are creating an id named foo in the namespace of your application.
You can refer to it using @id/foo.
@android:id/foo means you are referring to an id defined in the android namespace.
The '+' means to create the symbol if it doesn't already exist. You don't need it (and should...
How do I get a Date without time in Java?
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In enterprise applications we don't always have the option to add/use other libraries. I appreciate the pointer to Joda Time, but it's really not an answer to the original issue of getting the date portion using the standard Java. Thanks...