- 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: list of lists - Stack Overflow
The first, [:], is creating a slice (normally often used for getting just part of a list), which happens to contain the entire list, and thus is effectively a copy of the list The second, list(), is using the actual list type constructor to create a new list which has contents equal to the first list
- 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 ()
- Get list from pandas dataframe column or row? - Stack Overflow
However, it looks like tolist() is optimized for columns of Python scalars because I found that calling list() on a column was 10 times slower than calling tolist() For the record, I was trying to convert a column of json strings in a very large dataframe into a list and list() was taking its sweet time
- Best way to remove elements from a list - Stack Overflow
Best in what way, and is this remove elements based on their position or their value?
- Remove list from list in Python - Stack Overflow
Possible Duplicate: Get difference from two lists in Python What is a simplified way of doing this? I have been trying on my own, and I can't figure it out list a and list b, the new list should
- Array versus List lt;T gt;: When to use which? - Stack Overflow
A List uses an internal array to handle its data, and automatically resizes the array when adding more elements to the List than its current capacity, which makes it more easy to use than an array, where you need to know the capacity beforehand
- What is the difference between List. of and Arrays. asList?
@Sandy Chapman: List of does return some ImmutableList type, its actual name is just a non-public implementation detail If it was public and someone cast it to List again, where was the difference? Where is the difference to Arrays asList, which returns a non-public List implementation, that throws an exception when attempting add or remove, or the list returned by Collections
|