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How do I use raw_input in Python 3
... a leftover from when Python was less security conscious. The change simplified the language. See also "import this" for a deeper explanation. Would you prefer a dead language to one that evolves? There are plenty of those around.
– meawoppl
Apr 9 '14 at ...
Is there a “not in” operator in JavaScript for checking object properties?
Is there any sort of "not in" operator in JavaScript to check if a property does not exist in an object? I couldn’t find anything about this around Google or Stack Overflow. Here’s a small snippet of code I’m working on where I need this kind of functionality:
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How do I check if a directory exists? “is_dir”, “file_exists” or both?
I want to create a directory if it does'nt exist already.
12 Answers
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How to check if remote branch exists on a given remote repository?
I need to do a subtree merge for a specific branch, if it exists on a given remote repository. The problem is that the remote repository is not checked out locally, so I can't use git branch -r . All I have is a remote address, something like this https://github.com/project-name/project-name.git ...
Algorithm to return all combinations of k elements from n
...ickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous and avoid repetitions. There are many of t...
How to quickly check if folder is empty (.NET)?
I have to check, if directory on disk is empty. It means, that it does not contain any folders/files. I know, that there is a simple method. We get array of FileSystemInfo's and check if count of elements equals to zero. Something like that:
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In Clojure, when should I use a vector over a list, and the other way around?
...de" "generating back-to-front" -> means precisely?? I am really having difficulty with this question because in my book laziness + declarative style = far better performance, and yet vectors are suggested everywhere in Clojure which leaves me totally confused.
– Jimmy Hoffa
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Python : List of dict, if exists increment a dict value, if not append a new dict
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That is a very strange way to organize things. If you stored in a dictionary, this is easy:
# This example should work in any version of Python.
# urls_d will contain URL keys, with counts as values, like: {'http://www.google.fr/' : 1 }
urls_d = {}
for url in list_of_url...
How to merge lists into a list of tuples?
...generator that will be exhausted after using it once. Save into a variable if you want to use it more often
– Hakaishin
Sep 25 '18 at 13:34
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How to find out element position in slice?
...e on any slice.
Your function works, although it would be a little better if you wrote it using range.
If you happen to have a byte slice, there is bytes.IndexByte.
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