OrderedSet | Native Swift Ordered Set | iOS library
kandi X-RAY | OrderedSet Summary
kandi X-RAY | OrderedSet Summary
OrderedSet is a native Swift ordered set. It has the behavior and features of Array and Set in one abstract type.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of OrderedSet
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Trending Discussions on OrderedSet
QUESTION
I am using SortedSet to store objects in sorted order. I keep getting ValueError object not in list even though the object is indeed in the list.
Here is a reproducible example
...ANSWER
Answered 2021-Mar-25 at 19:24You forgot to return self.p < other.p.
QUESTION
I'm trying to implement a OrderedSet in F# (a set where you can get items by order of insertion). This is my first naive attempt at it (I still have to deal with possible duplicates in the IEnumerable passed to the constructor. The comparator is also still missing).
I don't think any of the above matters, though. I've been trying to solve the problem and, as far as I could gather from my research, it seems the issue is about indentation or lack of parentheses somewhere.
If I comment out my attempt at implement ISet, there is no issue, which leads me to believe there is something wrong with that part specifically. Here's the code:
...ANSWER
Answered 2021-Mar-23 at 13:48I only had to make two changes:
- Indent the
ifunder thedo. - Remove
this.in front of_set, because it'slet-bound, not a class member.
You also have to finish implementing ISet, of course. Here's the resulting code:
QUESTION
In Postgres, I can say select avg(size) from images and select max(size) from images.
But when I want the mode, I may not do this:
ANSWER
Answered 2021-Jan-14 at 15:13After looking at the documentation it appears as though they moved away from a simple function in favour of the window function, theyre citing speed advantages as a reason for this.
https://wiki.postgresql.org/wiki/Aggregate_Mode
If you wanted to you could just create a function yourself but it seems as though the window function is the fastest way to get a NOT NULL result back from the db.
QUESTION
I'm looking for a Java collection, possibly in standard library, which is able to collect the following structure:
...ANSWER
Answered 2020-Dec-25 at 12:30I don't think such a structure exists. You didn't specify traversal performance requirements, so you could use a normal Set and add the values to a list and sort that list by score for traversal.
QUESTION
I have a Pandas DataFrame, one column, is an OrderedSet like this:
df
...ANSWER
Answered 2020-Dec-16 at 02:35You can apply a list calling just like you would do with the OrderedSet itself:
QUESTION
I'm trying to remove some marks from text, like
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n
here is code where I am using here BeautifulSoup.
...ANSWER
Answered 2020-Jul-03 at 12:50I'm assuming obj.text_en looks like-
QUESTION
Given two lists e.g.
...ANSWER
Answered 2020-May-29 at 09:29Maybe something like this?
QUESTION
I have heard that when you perform an in operator on a list it has to search through O(n) objects while if you do it on a set it has to search through O(1) objects. To see what I mean go here. Does this still apply to OrderedSet?
ANSWER
Answered 2020-May-14 at 13:46Which OrderedSet are you talking about? At this time (Python 3.8.3), there is not OrderedSet in the standard library.
Typically, OrderedSet implementations will implement __contains__ by delegating to the underlying set. So it will have the algorithmic complexity you would expect.
QUESTION
This is a common task when building a list incrementally: having sorted the container, subsequent inserts should inject values efficiently at the correct location such that the sorted container stays sorted, and an iterator readout onto a standard list is O(n), being perfectly clear: I am looking for a call to compiled O(logn) inserts into what amounts to a list, as I would expect in the ordered set I'd get from std::set (where I'd have to explicitly specify std::unordered_set to get the default python behavior).
OrderedSet (the missing python type) would accomplish this task. Is there a way to get this effect in python such that it is as efficient within the container as it would be expected to be in a general purpose compiled language?
...ANSWER
Answered 2020-Jan-14 at 16:50import bisect
mylist = [1,2,5]
bisect.insort(mylist,4)
print(mylist)
# [1, 2, 4, 5]
QUESTION
I was going through this answer on Stack Overflow. I came to know about existence of OrderedSet in Python. I would like to know how it is implemented internally. Is it similar to hash table implementation of sets?
Also, what is the time complexity of some of the common operations like insert, delete, find, etc.?
...ANSWER
Answered 2019-Dec-19 at 22:40From the documentation available here
Implementation based on a doubly linked link and an internal dictionary. This design gives OrderedSet the same big-Oh running times as regular sets including O(1) adds, removes, and lookups as well as O(n) iteration.
There is also a discussion on the topic, see Does Python have an ordered set?
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