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Hibernate vs JPA vs JDO - pros and cons of each? [closed]
...ensions.
And there are other factors too, like how well you / your staff know the respective technologies, how much the products will cost in licensing, and whose story you believe about what is going to happen in the future for JDO and JPA.
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Why C# fails to compare two object types with each other but VB doesn't?
I have two objects in C# and don't know if it's Boolean or any other type.
However when I try to compare those C# fails to give the right answer.
I have tried the same code with VB.NET and that did it !
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Fast and responsive interactive charts/graphs: SVG, Canvas, other?
...ickly started getting slow. But each new version got substantially faster. Now I am on FF 18 beta and it's fast compared to 17. Not sure whether it is as smooth as chrome though.
– user2503795
Dec 10 '12 at 1:03
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Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
... closing tags match a previous opening tag. To understand it, you need to know which element is being closed. Without any means to "remember" what opening tags you've seen, no chance.
Note however that most "regex" libraries actually permit more than just the strict definition of regular expression...
Why covariance and contravariance do not support value type
...hout any change in representation; the native code itself doesn't need to know what you're doing with the values at all, so long as the infrastructure has guaranteed that it will definitely be valid.
For value types, that doesn't work - to treat an IEnumerable<int> as an IEnumerable<object...
Is “inline” without “static” or “extern” ever useful in C99?
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Yeah, I never understood this myself until just now, so thanks for asking :-). It is weird in that the non-extern "inline" definition goes in the header (but does not necessarily result in any code generation at all), while the "extern inline" declaration goes in the .c f...
What do I need to read to understand how git works? [closed]
...t RailsConf 2008 that covers much the same ground as the book.
Said Scott now maintains http://git-scm.com/, which includes the Git community book, which is more of a usage tutorial than a technical description, but does include both a nice conceptual overview of the git data model in the introduct...
What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA
...ulate the database logic for a specific entity so the calling code has no knowledge of the underlying persistence layer. From my brief research all of them typically implement your standard CRUD methods and abstract away the database-specific details.
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Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...t if not all answers on my own, since no one else replied. Please let me know if I've missed anything.
Q1. Yes, unless "enlist=false" is specified in the connection string. The connection pool finds a usable connection. A usable connection is one that's not enlisted in a transaction or one that'...
How to sort a collection by date in MongoDB?
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Sure, I know what a callback is. I only saw the sorting requirement in the question and all the answers give callbacks. At the same time, sorting wasn't working for me, so I thought maybe you have to do additional work in the function...