大约有 40,000 项符合查询结果(耗时:0.0331秒) [XML]

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Hibernate vs JPA vs JDO - pros and cons of each? [closed]

...rrent transaction - especially when there are a lot of objects. There is a detailed technical description of Hibernate's dirty checking mechanism in this SO answer: JPA with HIBERNATE insert very slow share | ...
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Rails: around_* callbacks

...an answer to Stack Overflow!Please be sure to answer the question. Provide details and share your research!But avoid …Asking for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips o...
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What command opens Ruby's REPL?

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Can not connect to local PostgreSQL

...d find the right files, but this was indeed the issue. Thanks for the very detailed answer. Once I'd found the correct directory, I needed to set the socket directory, data directory, hba_file and ident_file in postgresql.conf. Thank you! – Andy Harvey Dec 15 '...
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Git fetch remote branch

...hed HEAD' state. If you want a local branch, use the --track option. Full details are here: 3.5 Git Branching - Remote Branches, Tracking Branches share | improve this answer | ...
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C# code to validate email address

...r to this question (that answer has since been deleted). It has a lot more detail and some other ideas of how to solve the problem. Providing sanity checks is still a good idea for user experience. Assuming the e-mail address is valid, you could look for known top-level domains, check the domain fo...
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GridLayout (not GridView) how to stretch all children evenly

... UPDATE: Weights are supported as of API 21. See PaulT's answer for more details. END UPDATE There are limitations when using the GridLayout, the following quote is taken from the documentation. "GridLayout does not provide support for the principle of weight, as defined in weight. In genera...
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Reset PHP Array Index

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What's the difference between MemoryCache.Add and MemoryCache.Set?

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Change Canvas.Left property in code behind?

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