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Windows 7, 64 bit, DLL problems

...risP said, the problem was in my project dependencies. The key is "How to know your project dependencies in Qt 5?". As I didn't find any clear way to know it (Dependency Walker didn't help me a lot...), I followed next the "inverse procedure" that takes no more than 5 minutes and avoid a lot of he...
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Using Python's os.path, how do I go up one directory?

... Using abspath will just clean it up a bit. If it's not there, the actual string for the path name will be /Users/hobbes3/Sites/mysite/mysite/../templates, which is perfectly fine, but just a little more cluttered. It also ensures that Django's reminder to use absolute...
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STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术

...重载<操作符了: bool operator<(const a& a1, const a& a2) { if ( a1.m_a>=a2.m_a ) return false; return true; } 编译OK,可以使用了。 结论 因此,通过重载<操作符可以使自定义结构支持map容器。 另外的一种方法 下面介...
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Why do some functions have underscores “__” before and after the function name?

This "underscoring" seems to occur a lot, and I was wondering if this was a requirement in the Python language, or merely a matter of convention? ...
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What's the difference between size_t and int in C++?

...can't be a structure. I don't have a reference handy to back this up right now, though. – unwind Feb 2 '09 at 11:57 9 ...
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Using $_POST to get select option value from HTML

... Why is it always better to give values to your &lt;option&gt; tags? "If no value attribute is included, the value defaults to the text contained inside the element". If it works, what's wrong with that? – osullic Jan 8 '19 at 15:46 ...
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How to apply a function to two columns of Pandas dataframe

...sing apply on the dataframe, which I am calling with axis = 1. Note the difference is that instead of trying to pass two values to the function f, rewrite the function to accept a pandas Series object, and then index the Series to get the values needed. In [49]: df Out[49]: 0 ...
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Python: Is it bad form to raise exceptions within __init__?

Is it considered bad form to raise exceptions within __init__ ? If so, then what is the accepted method of throwing an error when certain class variables are initialized as None or of an incorrect type? ...
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Python Linked List

...bda lst, el: cons(el, lst), reversed(args), None) car = lambda lst: lst[0] if lst else lst cdr = lambda lst: lst[1] if lst else lst nth = lambda n, lst: nth(n-1, cdr(lst)) if n &gt; 0 else car(lst) length = lambda lst, count=0: length(cdr(lst), count+1) if lst else count begin = lambda *args: arg...
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How to prevent long words from breaking my div?

...element Another option is to inject &lt;wbr&gt;, a former IE-ism, which is now in HTML5: averyvery&lt;wbr&gt;longword Breaks with no hyphen: averyvery longword You can achieve the same with zero-width space character &amp;#8203; (or &amp;#x200B). FYI there's also CSS hyphens: auto supported by l...