大约有 31,100 项符合查询结果(耗时:0.0460秒) [XML]

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Difference between len() and .__len__()?

...e that I am calling built-in function len not some other function (like in my example) that happened to have same name - len. There is no warning like "You are redefining built-in function len" or something like this. In my opinion, I cannot be sure about what Alex stated in his answer. ...
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Are list-comprehensions and functional functions faster than “for loops”?

... @delnan I agree. I have modified my answer to urge OP to read the documentation to understand the difference in performance. – Anthony Kong Mar 1 '14 at 0:49 ...
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Is ServiceLocator an anti-pattern?

... let's start by looking at the examples that you have given. public class MyType { public void MyMethod() { var dep1 = Locator.Resolve<IDep1>(); dep1.DoSomething(); // new dependency var dep2 = Locator.Resolve<IDep2>(); dep2.DoSomething()...
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How do I handle the window close event in Tkinter?

... On my Python 2.7 on Windows, Tkinter didn't have a submodule messagebox. I used import tkMessageBox as messagebox – IronManMark20 May 11 '15 at 0:55 ...
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How many and which are the uses of “const” in C++?

...he compiler help you to decide when and when not you need to copy. struct MyString { char * getData() { /* copy: caller might write */ return mData; } char const* getData() const { return mData; } }; Explanation: You might want to share data when you copy something as long as the data of ...
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Finding current executable's path without /proc/self/exe

... The use of /proc/self/exe is non-portable and unreliable. On my Ubuntu 12.04 system, you must be root to read/follow the symlink. This will make the Boost example and probably the whereami() solutions posted fail. This post is very long but discusses the actual issues and presents c...
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LINQ-to-SQL vs stored procedures? [closed]

... LINQ to Entities works with Postgres and MySql in addition to MSSQL. Not sure, but I thought I read there was something for Oracle around. – bbqchickenrobot Jul 8 '09 at 17:36 ...
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How can I dynamically create derived classes from a base class

... just like pickle does to ordinary objects, and had lived to it in some of my tests. share | improve this answer | follow | ...
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What is a Context Free Grammar?

...o very related to the P vs. NP problem, and some other interesting stuff. My Introduction to Computer Science third year text book was pretty good at explaining this stuff: Introduction to the Theory of Computation. By Michael Sipser. But, it cost me like $160 to buy it new and it's not very big. M...
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How are software license keys generated?

...nd more prevalent, I still do not appreciate it as a user, so will not ask my users to put up with it. It should not be possible for a cracker to disassemble our released application and produce a working “keygen” from it. This means that our application will not fully test a key for verificatio...