List Formatting: `PromotedState` Can No Longer Be Updated Via `setValue`
I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: 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.
Jan 27, 2012list[a:b:c], a is the starting index, b is the ending index and c is the optional step size. This will give you a list starting at index a (inclusive) and ending at index b (exclusive). Nov 2, 2010when 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. 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.
Reorder list items on your computer, go to google keep. 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.
Feb 25, 2015a 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. The notation list means "a list of something (but i'm not saying what)". Since the code in test works for any kind of object in the list, this works as a formal method parameter.
Jul 19, 2014you can access the elements in a list-of-lists by first specifying which list you're interested in and then specifying which element of that list you want.