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Difference between len() and .__len__()?

...y calling an object's __len__ method. __something__ attributes are special and usually more than meets the eye, and generally should not be called directly. It was decided at some point long ago getting the length of something should be a function and not a method code, reasoning that len(a)'s mean...
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Greedy vs. Reluctant vs. Possessive Quantifiers

I found this excellent tutorial on regular expressions and while I intuitively understand what "greedy", "reluctant" and "possessive" quantifiers do, there seems to be a serious hole in my understanding. ...
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Basic HTTP authentication with Node and Express 4

...n: 'yourlogin', password: 'yourpassword'} // change this // parse login and password from headers const b64auth = (req.headers.authorization || '').split(' ')[1] || '' const [login, password] = Buffer.from(b64auth, 'base64').toString().split(':') // Verify login and password are set and co...
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Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4

...nts to parse the given positional argument as the keyword argument kwargs, and since a string is an iterable, an atypical code path begins to unfold. Always use name= on your urls! share | improve t...
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Getting the array length of a 2D array in Java

I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code: ...
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Test a weekly cron job [closed]

...it showing "Not a directory: -v" error, there is no man page for this command in my system , -v means verbose right? I am using centos 6.4 – max Dec 29 '13 at 11:01 3 ...
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How to install CocoaPods?

I referred too many links and tried, but had no success. If any one has an idea then please please share with me. I read cocoa pods documents and many times tried to install but always failed because of the starting steps. I found one error whereby I can't install gems first. Can anyone give me the ...
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Counting the number of elements with the values of x in a vector

... x creates a logical vector which is TRUE at every location that x occurs, and when suming, the logical vector is coerced to numeric which converts TRUE to 1 and FALSE to 0. However, note that for floating point numbers it's better to use something like: sum(abs(numbers - x) < 1e-6). ...
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How to do a GitHub pull request

How do I create and/or send a pull request to another repository hosted on GitHub? 8 Answers ...
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Insert spaces between words on a camel-cased token [duplicate]

... Slightly better regex that handles acronyms correctly: @"(\B[A-Z]+?(?=[A-Z][^A-Z])|\B[A-Z]+?(?=[^A-Z]))" – Aviad P. Dec 24 '12 at 10:01 ...