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Hibernate openSession() vs getCurrentSession()

....) The author suggests the use of filter. In his filter code, he doesn't call openSession() or close(). He only calls getCurrentSession(). I guess he sets current_session_context to thread. Now I think I understand getCurrentSession(). However, I don't know when should I use openSession(). ...
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Design for Facebook authentication in an iOS app that also accesses a secured web service

Goal: Allow a user to authentication with Facebook into an iOS application which requires access to a protected web service that I'm running. ...
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Why does Internet Explorer not send HTTP post body on Ajax call after failure?

...en a new connection. This can have a significant performance impact, especially on high latency networks. The issue is triggered easily if Ajax requests are made in rapid succession. For example, we make Ajax requests every 100ms and then the network status changes, the error is easy to reproduce. A...
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What's the difference between findAndModify and update in MongoDB?

...you will get back a different item than what you updated. Doing it "atomically" means you are guaranteed that you are getting back the exact same item you are updating - i.e. no other operation can happen in between. share ...
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What is the difference between the HashMap and Map objects in Java?

...She has something she needs to do with both things and moreThings, so naturally she puts that in a common method, and she uses the same type I used on getThings/getMoreThings when defining her method: class SpecialFoo extends Foo { private void doSomething(HashMap<String, Object> t) { ...
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std::auto_ptr to std::unique_ptr

...As for other differences, unique_ptr can handle arrays correctly (it will call delete[], while auto_ptr will attempt to call delete. share | improve this answer | follow ...
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Break promise chain and call a function based on the step in the chain where it is broken (rejected)

... The reason your code doesn't work as expected is that it's actually doing something different from what you think it does. Let's say you have something like the following: stepOne() .then(stepTwo, handleErrorOne) .then(stepThree, handleErrorTwo) .then(null, handleErrorThree); To bett...
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Having links relative to root?

Is there a way to have all links on a page be relative to the root directory? 6 Answers ...
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How to use WinForms progress bar?

... Nice example, but there's a small error in your code. You need to set the backgroundWorker.WorkerReportsProgress to true. Check my edit – Mana May 9 '17 at 8:02 ...
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Frequency table for a single variable

... employrate, Length: 139, dtype: float64 putting classification we put all values with a certain range ie. 0-10 as 1, 11-20 as 2 21-30 as 3, and so forth. gm["employrate"]=gm["employrate"].str.strip().dropna() gm["employrate"]=pd.to_numeric(gm["employrate"]) gm['employrate'] = np.where( ...