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Simplest way to do a recursive self-join?

... +1, except that Chris would need PersonID = theIdYouAreLookingFor instead of ParentID IS NULL. – Heinzi Nov 18 '09 at 16:40 ...
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Understanding dispatch_async

...the default queue over the main queue is to run tasks in the background. For instance, if I am downloading a file from the internet and I want to update the user on the progress of the download, I will run the download in the priority default queue and update the UI in the main queue asynchronousl...
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How to play with Control.Monad.Writer in haskell?

... typeclass in ghci Instead, you create writers using the writer function. For example, in a ghci session I can do ghci> import Control.Monad.Writer ghci> let logNumber x = writer (x, ["Got number: " ++ show x]) Now logNumber is a function that creates writers. I can ask for its type: ghci...
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How to properly overload the

I am writing a small matrix library in C++ for matrix operations. However my compiler complains, where before it did not. This code was left on a shelf for 6 months and in between I upgraded my computer from debian etch to lenny (g++ (Debian 4.3.2-1.1) 4.3.2 ) however I have the same problem on a Ub...
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使用CSplitterWnd实现拆分窗口(多视图显示) - C/C++ - 清泛网 - 专注C/C++及内核技术

...protected成员CSplitterWnd m_wndSplitter; 2. 建立对话框资源(IDD_FORMVIEW),并以CFormView类为基类建立相应的视类; 3. 重载OnCreateClient函数(如上述代码)。 4. 如果需要更多的划分,则再添加其他的CSplitterWnd成员变量,但在m_wndSplitter2.C...
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Detect encoding and make everything UTF-8

...and Latin1 in the same string. Usage: require_once('Encoding.php'); use \ForceUTF8\Encoding; // It's namespaced now. $utf8_string = Encoding::toUTF8($utf8_or_latin1_or_mixed_string); $latin1_string = Encoding::toLatin1($utf8_or_latin1_or_mixed_string); Download: https://github.com/neitanod/f...
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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?

... brokers like RabbitMQ which we can use to create tasks / message queues for a scheduling system like Celery . 2 Answers...
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Detect all Firefox versions in JS

...'d emphasize what @TomášZato said. This is not a complex search and therefore regex should not be used... or am I missing something about the regex? – dudewad Oct 20 '14 at 2:13 ...
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How do I save and restore multiple variables in python?

...a dozen objects to a file and then restore them later. I've tried to use a for loop with pickle and shelve but it didn't work right. ...
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Difference between int32, int, int32_t, int8 and int8_t

...different times, both 16 bits and 32 bits have been reasonably common (and for a 64-bit implementation, it should probably be 64 bits). On the other hand, int is guaranteed to be present in every implementation of C, where int8_t and int32_t are not. It's probably open to question whether this matt...