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return, return None, and no return at all?

...re. return None is never used if there are no other possible return values from the function. In the following example, we return person's mother if the person given is a human. If it's not a human, we return None since the person doesn't have a mother (let's suppose it's not an animal or something...
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How can I create and style a div using JavaScript?

...javascript UIs. given that it embraces the functional model of programming from the get go, it makes your code look and behave functional as well. Case in point: ajax using native js vs jquery :) – jrharshath Jul 27 '11 at 16:24 ...
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What is the significance of #pragma marks? Why do we need #pragma marks?

...used to tag the group of methods so you may easily find and detect methods from the Jump Bar. It may help you when your code files reach about 1000 lines and you want to find methods quickly through the category from Jump box. In a long program it becomes difficult to remember and find a method nam...
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maxlength ignored for input type=“number” in Chrome

... From MDN's documentation for <input> If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the maximum number of characters (in Unicode code points) that the user...
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How to use pip with Python 3.x alongside Python 2.x

... outdated location for the get-pip.py script, please use the one available from https://bootstrap.pypa.io/get-pip.py – Kevin Brotcke Feb 1 '16 at 4:39 ...
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Convert List to List

While we can inherit from base class/interface, why can't we declare a List<> using same class/interface? 11 Ans...
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Format timedelta to string

...nt(254459)) then you just use split to get the microseconds out of play. From 0:03:43.765000 I can get 0:03:43 by simply running TotalDuration=str(ConvertDuration).split('.', 2)[0] – DarkXDroid Feb 8 '15 at 11:51 ...
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Colorized grep — viewing the entire file with highlighted matches

... Also works with piping (reading from stding) using -: … | less -p pattern - – phk Dec 13 '17 at 15:45 3 ...
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Copy all files and folders using msbuild

...g to write. What I would like to do is copy all the files and sub folders from a folder to another folder using msbuild. 1...
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open() in Python does not create a file if it doesn't exist

...if it exists, or if it does not, then create it and open it as read/write? From what I read, file = open('myfile.dat', 'rw') should do this, right? ...