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- Meaning of list[-1] in Python - Stack Overflow
I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter c = Counte
- python - if else in a list comprehension - Stack Overflow
Since a list comprehension creates a list, it shouldn't be used if creating a list is not the goal; it shouldn't be used simply to write a one-line for-loop; so refrain from writing [print(x) for x in range(5)] for example
- slice - How slicing in Python works - Stack Overflow
The first way works for a list or a string; the second way only works for a list, because slice assignment isn't allowed for strings Other than that I think the only difference is speed: it looks like it's a little faster the first way Try it yourself with timeit timeit () or preferably timeit repeat ()
- Sorting a list with stream. sorted () in Java - Stack Overflow
Sorted list: [20 455, 23 455, 24 455, 28 455] Are you sure you are not verifying list instead of sortedList [in above example] i e you are storing the result of stream() in a new List object and verifying that object?
- What is the difference between list and list [:] in python?
When reading, list is a reference to the original list, and list[:] shallow-copies the list When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously in the list Also, don't use list as a name since it shadows the built-in
- How to list the certificates stored in a PKCS12 keystore with keytool . . .
17 You can list down the entries (certificates details) with the keytool and even you don't need to mention the store type Also, the p12 and pfx are both PKCS#12 files Assume that you've the keystore file cert pfx or cert p12 then you can use the following command to list down the content keytool -list -v -keystore cert pfx -storepass
- Filter dataframe rows if value in column is in a set list of values
134 isin() is ideal if you have a list of exact matches, but if you have a list of partial matches or substrings to look for, you can filter using the str contains method and regular expressions For example, if we want to return a DataFrame where all of the stock IDs which begin with '600' and then are followed by any three digits:
- Most efficient way to find if a value exists within a C# List
In C# if I have a List of type bool What is the fastest way to determine if the list contains a true value? I don’t need to know how many or where the true value is I just need to know if one e
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