List of library software. List<T> requires 1 type arguments. I just need to know if one e Oct 7, 2025 · To ensure a consistent and high-quality experience, Google individually certifies and maintains a list of models that you can use with ChromeOS Flex. Nov 2, 2010 · When reading, list is a reference to the original list, and list[:] shallow-copies the list. I need a two column list like: List<int,string> mylist= new List<int,string> (); it says using the generic type System. See Flatten an irregular (arbitrarily nested) list of lists for solutions that 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(). . Try it yourself with timeit. 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. generic. You might run into minor issues. The most popular solutions here generally only flatten one "level" of the nested list. Also, don't use list as a name since it shadows the built-in. When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously in the list. collection. You can use type=int (or whatever) to get a list of ints (or whatever) Given a dataframe, I want to groupby the first column and get second column as lists in rows, so that a dataframe like: a b A 1 A 2 B 5 B 5 B 4 C 6 becomes A [1,2] B [5,5,4] C [6] How do I do this? Apr 17, 2013 · In C# if I have a List of type bool. Don't use quotes on the command line 1 Don't use type=list, as it will return a list of lists This happens because under the hood argparse uses the value of type to coerce each individual given argument you your chosen type, not the aggregate of all arguments. 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 comprehension instead of a nested list?. 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. Nov 2, 2010 · When reading, list is a reference to the original list, and list[:] shallow-copies the list. Minor issues expected —Models are likely to support at least basic functionality, but are still being worked on by our team. repeat (). Major issues Feb 25, 2015 · A list of lists would essentially represent a tree structure, where each branch would constitute the same type as its parent, and its leaf nodes would represent values. Other than that I think the only difference is speed: it looks like it's a little faster the first way. 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. Model status Certified —Models are expected to work with ChromeOS Flex. timeit () or preferably timeit. 2xavhm58lwngri0y2ed7sm02i7eegcgi2bpkuklyxm6uo