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 …
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 …
Use a list of values to select rows from a Pandas dataframe
list_of_values doesn't have to be a list; it can be set, tuple, dictionary, numpy array, pandas Series, generator, range etc. and isin() and query() will still work.
What is the difference between List.of and Arrays.asList?
Oct 5, 2017 · @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, …
Most efficient way to find if a value exists within a C# List
Apr 17, 2013 · 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 …
How do I make a flat list out of a list of lists? - Stack Overflow
If your list of lists comes from a nested list comprehension, the problem can be solved more simply/directly by fixing the comprehension; please see How can I get a flat result from a list …
Google Sheets function list - Google Docs Editors Help
Google Sheets supports cell formulas typically found in most desktop spreadsheet packages. Functions can be used to create formulas that manipulate data and calculate strings and …
Get unique values from a list in python - Stack Overflow
Oct 15, 2012 · 1538 First declare your list properly, separated by commas. You can get the unique values by converting the list to a set.
Array versus List<T>: When to use which? - Stack Overflow
Jan 12, 2009 · 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 …
c# - How to initialize a list of strings (List<string>) with many ...
How is it possible to initialize (with a C# initializer) a list of strings? I have tried with the example below but it's not working. List<string> optionList = new List<string> { "