- 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
- 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
- What is the difference between list [1] and list [1:] in Python?
By using a : colon in the list index, you are asking for a slice, which is always another list In Python you can assign values to both an individual item in a list, and to a slice of the 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 ()
- How to overcome TypeError: unhashable type: list
# Here we use readlines() to split the file into a list where each element is a line for line in f readlines(): # Now we split the file on `x`, since the part before the x will be # the key and the part after the value
- java - Create a List of primitive int? - Stack Overflow
List<Integer> might lead to devastating memory fragmentation Java maintains constant pool for some integers in 0 128 range but generally Java allocates a new object for each 32-bit integer (wasting at least 16-4=12 bytes of RAM) + worsening GC performance
- terminal - List of ANSI color escape sequences - Stack Overflow
On most terminals it is possible to colorize output using the \\033 ANSI escape sequence I'm looking for a list of all supported colors and options (like bright and blinking) As there are probably
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