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What is pseudopolynomial time? How does it differ from polynomial time?
What is pseudopolynomial time ? How does it differ from polynomial time? Some algorithms that run in pseudopolynomial time have runtimes like O(nW) (for the 0/1 Knapsack Problem ) or O(√n) (for trial division ); why doesn't that count as polynomial time?
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How do I make a textbox that only accepts numbers?
I have a windows forms app with a textbox control that I want to only accept integer values. In the past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more g...
Convert a Python list with strings all to lowercase or uppercase
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It can be done with list comprehensions. These basically take the form of [function-of-item for item in some-list]. For example, to create a new list where all the items are lower-cased (or upper-cased in the second snippet), you would use:
>>&g...
How to use timeit module
I understand the concept of what timeit does but I am not sure how to implement it in my code.
14 Answers
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How to call an external command?
...use shlex.split for an easy way to do this docs.python.org/2/library/shlex.html#shlex.split
– Daniel F
Sep 20 '18 at 18:05
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Throttling method calls to M requests in N seconds
I need a component/class that throttles execution of some method to maximum M calls in N seconds (or ms or nanos, does not matter).
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How to convert a date string to different format [duplicate]
...tring "2013-1-25" to string "1/25/13" in python.
I looked at the datetime.strptime but still can't find a way for this.
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Specialization with Constraints
I'm having problems getting GHC to specialize a function with a class constraint. I have a minimal example of my problem here: Foo.hs and Main.hs . The two files compile (GHC 7.6.2, ghc -O3 Main ) and run.
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VC/MFC 临界区域使用方法实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
VC/MFC 临界区域使用方法实例临界区域的作用：避免临界区域内的数据(一般为共享的资源)被不同的线程同时访问，实现线程的同步操作。保证只能由先进入临界区域的一个线程...临界区域的作用：避免临界区域内的数据(一般为...