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How do you get current active/default Environment profile programmatically in Spring?

I need to code different logic based on different current Environment profile. How can you get the current active and default profiles from Spring? ...
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INSERT INTO … SELECT FROM … ON DUPLICATE KEY UPDATE

I'm doing an insert query where most of many columns would need to be updated to the new values if a unique key already existed. It goes something like this: ...
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AsyncTaskLoader vs AsyncTask

Since Honeycomb and the v4 Compatibility Library it is possible to use AsyncTaskLoader . From what I understand, the AsyncTaskLoader can survive through config changes like screen flips. ...
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Qt: *.pro vs *.pri

What is the difference between *.pro and *.pri configuration files for qmake? 3 Answers ...
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How do I create an immutable Class?

I am working on creating an immutable class. I have marked all the properties as read-only. 6 Answers ...
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Should I use Python 32bit or Python 64bit

...e a win7 64bit installation. Must I use Python 64bit? What are the differences between the 32bit and 64bit Python versions anyway? Do different Python packages (such as south, django, mysqldb etc) support only 32bit/64bit? ...
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When to use Preorder, Postorder, and Inorder Binary Search Tree Traversal strategies

I realized recently that while having used BST's plenty in my life, I've never even contemplated using anything but Inorder traversal (while I am aware of and know how easy it is to adapt a program to use pre/post-order traversal). ...
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Converting PKCS#12 certificate into PEM using OpenSSL

I have OpenSSL x64 on Windows 7 which I downloaded from openssl-for-windows on Google Code . I'm attempting to run: 5 Answ...
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What's an object file in C?

I am reading about libraries in C but I have not yet found an explanation on what an object file is. What's the real difference between any other compiled file and an object file? I would be glad if someone could explain in human language. ...
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Rails migrations: self.up and self.down versus change

Looks like the new rails version has "change" versus self.up and self.down methods. 3 Answers ...