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How can I dynamically create derived classes from a base class

... This bit of code allows you to create new classes with dynamic names and parameter names. The parameter verification in __init__ just does not allow unknown parameters, if you need other verifications, like type, or that they are mandatory...
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How does Apple know you are using private API?

...since I do not work in the Apple review team. 1. otool -L This will list all libraries the app has linked to. Something clearly you should not use, like IOKit and WebKit can be detected by this. 2. nm -u This will list all linked symbols. This can detect Undocumented C functions such as _UIIma...
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How to reverse a string in Go?

...size of the input in bytes. It does not correspond to its length. - Not all utf8's runes are of the same size. It can be either 1, 2, 4, or 8. - You should use unicode/ut8 package's method RuneCountInString to get the length of the rune. – Anvesh Checka M...
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python generator “send” function purpose?

...t's useful, one of the best use cases I've seen is Twisted's @defer.inlineCallbacks. Essentially it allows you to write a function like this: @defer.inlineCallbacks def doStuff(): result = yield takesTwoSeconds() nextResult = yield takesTenSeconds(result * 10) defer.returnValue(nextResu...
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Python Sets vs Lists

...move the object creation now. The setup phase of the timeit loops is only called once (docs.python.org/2/library/timeit.html#timeit.Timer.timeit). – Ellis Percival Sep 30 '14 at 10:09 ...
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Good examples of Not a Functor/Functor/Applicative/Monad?

...but not Applicative: I don't have a good example. There is Const, but ideally I'd like a concrete non-Monoid and I can't think of any. All types are basically numeric, enumerations, products, sums, or functions when you get down to it. You can see below pigworker and I disagreeing about whether ...
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Mark error in form using Bootstrap

...ation pass. Your code here. } } View <div class="col-md-12"> <?php $email_error = (form_error('email') ? 'has-error has-feedback' : ''); if(!empty($email_error)){ $emailData = '<span class="help-block">'.form_error('email').'</span>'; $emailClass = $email_error; $emailI...
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Is there a way to make GHC provide the type class constraints of typed holes?

...ng out-of-scope types (use -fprint-potential-instances to see them all) • In the expression: show _ In an equation for ‘it’: it = show _ <interactive>:3:6: error: • Found hole: _ :: a0 Where: ‘a0’ is an ambiguous type variable • In the first argum...
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BugTrap:程序崩溃快照、bug跟踪之利器 - C/C++ - 清泛网 - 专注C/C++及内核技术

...p.h" static void SetupExceptionHandler() { LOG_TRACER(); BT_InstallSehFilter(); // 配置信息 BT_SetAppName(_T("MarketInfo")); BT_SetDialogMessage(BTDM_INTRO1, _T("We're so Sorry, program crashed because of our mistakes !")); BT_SetDialogMessage(BTDM_INTRO2, _T("本程序...
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Linux - Replacing spaces in the file names

...umber of files in a folder, and I want to replace every space character in all file names with underscores. How can I achieve this? ...