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Why use Abstract Base Classes in Python?

...t to Set, suddenly belonging to the the ABC has considerable semantics. An item can't belong to the collection twice. That is NOT detectable by the existence of methods. – Oddthinking Aug 26 '10 at 16:55 ...
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Is there a CSS parent selector?

... You can't shift the pseudo selector to the list item, as it is not a focusable element. He's using the :active selector, so when the anchor is active he wants the list item to be affected. List items will never be in the active state. As an aside, it's unfortunate that suc...
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Getting the class name of an instance?

... If you're using type(item) on a list item the result will be <type 'instance'> while item.__class__.__name__ holds the class name. – Grochni Aug 6 '14 at 9:43 ...
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How many random elements before MD5 produces collisions?

.../2^64" - what? The probability of collision is dependent on the number of items already hashed, it's not a fixed number. In fact, it's equal to exactly 1 - sPn/s^n, where s is the size of the search space (2^128 in this case), and n is the number of items hashed. What you are probably thinking of...
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Thread-safe List property

...nlike List<T> it does not guarantee ordering. Also you cannot access items by index. – Radek Stromský Mar 7 '13 at 13:56 12 ...
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$watch'ing for data changes in an Angular directive

... best answer out there. – chovy Jul 19 '15 at 9:11  |  show 3 more c...
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Can you grab or delete between parentheses in vi/vim?

... Various Motions: % The % command jumps to the match of the item under the cursor. Position the cursor on the opening (or closing) paren and use y% for yanking or d% for deleting everything from the cursor to the matching paren. This works because % is a "motion command", so it can b...
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Performing a Stress Test on Web Application?

... A little late to this party. I agree that Pylot is the best up-and-coming open source tool out there. It's simple to use and is actively worked on by a great guy (Corey Goldberg). As the founder of OpenQA, I'm also happy that Pylot now is listed on our home page and uses some of ...
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how to replicate pinterest.com's absolute div stacking layout [closed]

... you know how high it should be if you don't know the number and height of items within it? Any chance you could layout some pseudo code to demonstrate? – Michael Giovanni Pumo Sep 23 '11 at 16:13 ...
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CListCtrl 如何设置单元格颜色? - C/C++ - 清泛网 - 专注C/C++及内核技术

...LSE); //设置表头 CStringArray Head; CByteArray Cols; Head.Add("Item"); Cols.Add(40); //40% Head.Add("Sub1"); Cols.Add(30); //70% Head.Add("Sub2"); Cols.Add(30); //100% m_ColListCtrl.InitCtrl(&Head, &Cols); //添加数据 CString Linetitle; int pos=0; for (in...