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How do I check if a type provides a parameterless constructor?
I'd like to check if a type that is known at runtime provides a parameterless constructor. The Type class did not yield anything promising, so I'm assuming I have to use reflection?
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What does %w(array) mean?
I'm looking at the documentation for FileUtils.
8 Answers
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Why must we define both == and != in C#?
The C# compiler requires that whenever a custom type defines operator == , it must also define != (see here ).
13 Answe...
Return a `struct` from a function in C
Today I was teaching a couple of friends how to use C struct s. One of them asked if you could return a struct from a function, to which I replied: "No! You'd return pointers to dynamically malloc ed struct s instead."
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技术人员如何去面试？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...宾馆或者学校会议室自习室之类的。
一般社交距离是45cm是比较合适的，面试过程中，主动权基本都在面试官手上，所以你配合就好了，不要太把自己当回事，别人可能会反感你这个行为。一般面试两人距离大于45cm左右比较合...
Accessing Object Memory Address
When you call the object.__repr__() method in Python you get something like this back:
9 Answers
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Python speed testing - Time Difference - milliseconds
What is the proper way to compare 2 times in Python in order to speed test a section of code? I tried reading the API docs. I'm not sure I understand the timedelta thing.
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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
如何选择机器学习算法Choosing-a-Machine-Learning-Classifier如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试不同的参数），...
如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
如何选择机器学习算法Choosing-a-Machine-Learning-Classifier如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试不同的参数），...
When to use reinterpret_cast?
I am little confused with the applicability of reinterpret_cast vs static_cast . From what I have read the general rules are to use static cast when the types can be interpreted at compile time hence the word static . This is the cast the C++ compiler uses internally for implicit casts also.
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