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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 ...
Is XSLT worth it? [closed]
...f your team working with just XML.
A real world use case: I just wrote an app which handles in-memory XML docs throughout the system, and transforms to JSON, HTML, or XML as requested by the end user. I had a fairly random request to provide as Excel data. A former colleague had done something simi...
How to set time zone of a java.util.Date?
...lendar to interpret this millisecond time. So printing out a Date makes it appear to have a (default) timezone, leading to understandable questions about how to set that timezone.
– David Carboni
Jul 11 '12 at 13:41
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Visual Studio popup: “the operation could not be completed”
...tructor of your custom controls even at design time, and weird things can happen (at design time some properties dont works, your connection string probably isn't populated...)
As a last resort...
Try to install any VS update
Try to disable VS extensions (if you installed any...)
Try to update...
90后创业四年:曾经觉得不公 后来愿赌服输 - 资讯 - 清泛网 - 专注C/C++及内核技术
...术，用人工智能的方法让机器创作出曲子来。用户在听画App上传一张照片，我们能用人工智能技术为每张照片配上属于它的原创音乐。除了社交，我们更想把听画打造成草根音乐人的原创音乐创作社区。因为，我们的人工智能谱...
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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What's the best manner of implementing a social activity stream? [closed]
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I have created such system and I took this approach:
Database table with the following columns: id, userId, type, data, time.
userId is the user who generated the activity
type is the type of the activity (i.e. Wrote blog post, added photo, commented on user's phot...
When to Redis? When to MongoDB? [closed]
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I would say, it depends on kind of dev team you are and your application needs.
For example, if you require a lot of querying, that mostly means it would be more work for your developers to use Redis, where your data might be stored in variety of specialized data structures, customize...
Should I use px or rem value units in my CSS? [closed]
...e (heavily visually impaired ppl). If you can, use rem instead of px. IMO, apps should be able to scale independently their interface and the font-size. "Just use px" is what many devs struggling with ems issue want to hear, but it is not the right answer for the web.
– Olivvv
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Immutability of Strings in Java
...he differnce between immutable object and others.
– Zappi
Oct 12 '09 at 8:15
1
Thanks gustafc for...