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What's so bad about Template Haskell?

... Tough luck, you'll only see that when actually using your code generator, and only under the circumstances that trigger the generation of that particular code. It is very difficult to unit test, too. TH is also outright dangerous: Code that runs at compile-time can do arbitrary IO, including la...
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Why is a boolean 1 byte and not 1 bit of size?

... Actually, the four x86 instructions bt, bts, btr and btc can address single bits! – fredoverflow Jan 7 '11 at 16:07 ...
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Apache and Node.js on the Same Server

... because it's swift, uses the same language I am using on the client side, and it's non-blocking by definition. But the guy who I hired to write the program for file handling (saving, editing, renaming, downloading, uploading files, etc.), he wants to use apache. So, I must: ...
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commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated

Sometimes, when using <h:commandLink> , <h:commandButton> or <f:ajax> , the action , actionListener or listener method associated with the tag are simply not being invoked. Or, the bean properties are not updated with submitted UIInput values. ...
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SQL Logic Operator Precedence: And and Or

... And has precedence over Or, so, even if a <=> a1 Or a2 Where a And b is not the same as Where a1 Or a2 And b, because that would be Executed as Where a1 Or (a2 And b) and what you want, to make them the same,...
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Why does Python pep-8 strongly recommend spaces over tabs for indentation?

I see on Stack Overflow and PEP 8 that the recommendation is to use spaces only for indentation in Python programs. I can understand the need for consistent indentation and I have felt that pain. ...
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SFTP Libraries for .NET [closed]

... now I'm looking at products such as SecureBlackbox, IPWorks SSH, WodSFTP, and Rebex SFTP. However, I have never used any SFTP library before so I'm not sure what I'm looking for. ...
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Is there any performance gain in indexing a boolean field?

... think about it like a book. If there were only 3 kinds of words in a book and you index all of them, you would have the same number of index pages as normal pages. There would be a performance gain if there are relatively few records of one value. For example, if you have 1000 records and 10 of t...
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地图组件(高德地图) · App Inventor 2 中文网

...r drags it. LongClick() The LongClick event runs when the user presses and holds the 标记 and then releases it. This event will only trigger if Draggable is 假 because it uses the same gesture as StartDrag. StartDrag() The StartDrag event runs when the user presses and holds the 标记 ...
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What is the difference between OpenID and SAML?

What is the difference between OpenID and SAML? 4 Answers 4 ...