I’m currently working on a map editor for a game in pygame, using tile maps. The level is built up out of blocks in the following structure (though much larger): level1 = ( (1,1,1,1,1,1) (1,0,0,0,0,1) (1,0,0,0,0,1) (1,0,0,0,0,1) (1,0,0,0,0,1) (1,1,1,1,1,1)) where “1” is a block that’s a wall and “0” is a block that’s empty air. … Read more
This question already has answers here: Closed 9 years ago. Possible Duplicate: A Transpose/Unzip Function in Python I have a list of tuples, where I want to unzip this list into two independent lists. I’m looking for some standardized operation in Python. >>> l = [(1,2), (3,4), (8,9)] >>> f_xxx (l) [ [1, 3, 8], … Read more
Is there a way to use a Tuple class, but supply the names of the items in it? For example: public Tuple<int, int, int int> GetOrderRelatedIds() That returns the ids for OrderGroupId, OrderTypeId, OrderSubTypeId and OrderRequirementId. It would be nice to let the users of my method know which is which. (When you call the … Read more
Is there any performance difference between tuples and lists when it comes to instantiation and retrieval of elements? 9 Answers 9
What is the Pythonic approach to achieve the following? # Original lists: list_a = [1, 2, 3, 4] list_b = [5, 6, 7, 8] # List of tuples from ‘list_a’ and ‘list_b’: list_c = [(1,5), (2,6), (3,7), (4,8)] Each member of list_c is a tuple, whose first member is from list_a and the second is … Read more
This question already has answers here: A Java collection of value pairs? (tuples?) (20 answers) Closed 6 years ago. My Hashtable in Java would benefit from a value having a tuple structure. What data structure can I use in Java to do that? Hashtable<Long, Tuple<Set<Long>,Set<Long>>> table = … 14 Answers 14
Say I have a Python function that returns multiple values in a tuple: def func(): return 1, 2 Is there a nice way to ignore one of the results rather than just assigning to a temporary variable? Say if I was only interested in the first value, is there a better way than this: x, … Read more
I am learning Python and creating a database connection. While trying to add to the DB, I am thinking of creating tuples out of information and then add them to the DB. What I am Doing: I am taking information from the user and store it in variables. Can I add these variables into a … Read more
I love tuples. They allow you to quickly group relevant information together without having to write a struct or class for it. This is very useful while refactoring very localized code. Initializing a list of them however seems a bit redundant. var tupleList = new List<Tuple<int, string>> { Tuple.Create( 1, “cow” ), Tuple.Create( 5, “chickens” … Read more
As we all know, there’s list comprehension, like [i for i in [1, 2, 3, 4]] and there is dictionary comprehension, like {i:j for i, j in {1: ‘a’, 2: ‘b’}.items()} but (i for i in (1, 2, 3)) will end up in a generator, not a tuple comprehension. Why is that? My guess is … Read more