Another alternative: you can check if an item is in a list with if item in list:, but this is order O(n). If you are dealing with big lists of items and all you need to know is whether something is a … From stackoverflow.com
ARRAY VERSUS LIST<T>: WHEN TO USE WHICH? - STACK OVERFLOW
Jan 12, 2009 Using e.g. List<Point> list, it would be necessary to instead say Point temp=list[3]; temp.x+=q; list[3]=temp;. It would be helpful if List<T> had a method Update<TP>(int index, … From stackoverflow.com
WRITING A LIST TO A TXT FILE IN PYTHON - STACK OVERFLOW
Dec 2, 2013 writelines() needs a list of strings with line separators appended to them but your code is only giving it a list of integers. To make it work you'd need to use something like this: … From stackoverflow.com
BEST WAY TO REMOVE ELEMENTS FROM A LIST - STACK OVERFLOW
Feb 2, 2014 This makes indexing a list a[i] an operation whose cost is independent of the size of the list or the value of the index. When items are appended or inserted, the array of references … From stackoverflow.com
TYPEERROR: LIST INDICES MUST BE INTEGERS OR SLICES, NOT STR
Sep 14, 2015 1. A list is used as if it were a dictionary 1.1. Index a list as if it was a dictionary. This case commonly occurs when a json object is converted into a Python object but there's a … From stackoverflow.com
PYTHON - REMOVING DUPLICATES IN LISTS - STACK OVERFLOW
Nov 1, 2011 def make_unique(original_list): unique_list = [] [unique_list.append(obj) for obj in original_list if obj not in unique_list] return unique_list Some may consider list comprehension … From stackoverflow.com
COMMAND TO LIST ALL FILES IN A FOLDER AS WELL AS SUB-FOLDERS IN WINDOWS
Mar 11, 2015 To print specific file present in the folders/sub-folders for eg : If you want to list just the csv files then : dir /b/s/A-D/o:gn *.csv >list.txt If you want to also include .xlsx files then the … From stackoverflow.com
HOW DO I MAKE A FLAT LIST OUT OF A LIST OF LISTS? - STACK OVERFLOW
Dec 3, 2016 A list of lists named xss can be flattened using a nested list comprehension: flat_list = [ x for xs in xss for x in xs ] The above is equivalent to: flat_list = [] for xs in xss: for x in xs: … From stackoverflow.com
HOW CAN I FIND THE INDEX FOR A GIVEN ITEM IN A LIST?
@stefanct this likely does double the complexity, I believe the in operator on a list has linear runtime. . @ApproachingDarknessFish stated it would iterate twice which answers your … From stackoverflow.com
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