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How do you detect Credit card type based on number?

...rds; there are other cards issued using the MasterCard system that do not fall into this IIN range. In 2016, they will add numbers in the range (222100-272099). American Express: ^3[47][0-9]{5,}$ American Express card numbers start with 34 or 37. Diners Club: ^3(?:0[0-5]|[68][0-9])[0-9]{4,}$ Dine...
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Difference between __getattr__ vs __getattribute__

... the attribute wasn't found the usual ways. It's good for implementing a fallback for missing attributes, and is probably the one of two you want. __getattribute__ is invoked before looking at the actual attributes on the object, and so can be tricky to implement correctly. You can end up in infi...
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Accessing members of items in a JSONArray with Java

... how I can do this for php? – Hanie Asemi May 28 '17 at 12:47 How ...
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Header files for x86 SIMD intrinsics

... These days you should normally just include <immintrin.h>. It includes everything. GCC and clang will stop you from using intrinsics for instructions you haven't enabled at compile time (e.g. with -march=native or -mavx2 -mbmi2 -mpopcnt -mfma ...
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Position icons into circle

...<img> elements into a circle around another and have those elements all be clickable links as well? I want it to look like the picture below, but I have no idea how to achieve that effect. ...
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What do all of Scala's symbolic operators mean?

...se of teaching, into four categories: Keywords/reserved symbols Automatically imported methods Common methods Syntactic sugars/composition It is fortunate, then, that most categories are represented in the question: -> // Automatically imported method ||= // Syntactic sugar ++= // Syn...
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Open file via SSH and Sudo with Emacs

...: or su:hostname: with remote hosts. The trap here is that sudo:: does actually appear to work -- however when you do that the HOST for the dynamic proxy entry will be the hostname you originated from rather than the host you connected to. This will not only look confusing (as the wrong host will be...
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Build a Basic Python Iterator

... Iterator objects in python conform to the iterator protocol, which basically means they provide two methods: __iter__() and __next__(). The __iter__ returns the iterator object and is implicitly called at the start of loops. The __next__() method returns the next value and is implicitly cal...
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Is there a way to follow redirects with command line cURL?

I know that in a php script: 3 Answers 3 ...
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List all the modules that are part of a python package?

Is there a straightforward way to find all the modules that are part of a python package? I've found this old discussion , which is not really conclusive, but I'd love to have a definite answer before I roll out my own solution based on os.listdir(). ...