11 questions
0
votes
1
answer
687
views
How can I Create 3D Billboard Curved Screen Using Unity?
I want Create Digital Signage like this picture for 3D Billboard Curved Screen using Unity.
I found method for make that.
Renders the camera at a three-dimensional angle.
Map the rendered image once ...
- 51
5
votes
1
answer
278
views
Memoizing a recursion scheme
Is it possible to memoize a recursion scheme? If so, how would you?
For example, the following uses anamophism and catamorphism
newtype Fix f = In (f (Fix f))
deriving instance (Eq (f (Fix f))) => ...
- 141
2
votes
1
answer
169
views
Writing zip (longzip) using an anamorphism
Working on a project and trying to write longzip using an anamorphism. I'm having some trouble writing a coalgebra for this use case. I've defined my anamorphism in terms of Fix below:
-- Fixed point ...
- 529
5
votes
1
answer
298
views
Haskell monadic parser with anamorphisms
My problem is how to combine the recursive, F-algebra-style recursive type definitions, with monadic/applicative-style parsers, in way that would scale to a realistic programming language.
I have ...
- 152
3
votes
1
answer
123
views
Swift Sequence Anamorphism
Does Swift's standard library include a list anamorphism for a Sequence or something similar?
An Anamorphism on lists or sequences would be the opposite of the reduce function. So instead of ...
- 14k
0
votes
0
answers
1k
views
anam/phantommagick - Binary does not exist in server Oracle Linux Server 7.6
I am working laravel project, I convert the view page as an image using anam/phantommagick package enter link description here. It Working fine in my local system (Ubuntu 16.04.6 LTS).But move the ...
- 7,401
1
vote
2
answers
398
views
A recursion scheme from Int -> Int?
The foldr identity is
foldr (:) []
More generally, with folds you can either destroy structure and end up with a summary value or inject structure in such a way that you end up with the same output ...
- 529
0
votes
1
answer
1k
views
Anamorphosis in Python
I tried to do anamorphosis on an image by following this link
https://github.com/aydal/Cylinderical-Anamorphosis/blob/master/anamorph.py
It gives an anamorphic image but it gives that image in the ...
- 365
1
vote
1
answer
157
views
Repetitions as an Hylomorphism
So I've been trying to convert this Haskell function thats checks if a list doesn't have any repetitions into an Hylomorphism, but there's something odd about it.
valid :: [a] -> Bool
valid [] = ...
3
votes
0
answers
905
views
Haskell - Expressing the Depth First Traversal of a Rose Tree as an instance of unfold, deriving it algebraically
Suppose we have a Rose Tree defined, along with the corresponding fold over the datatype.
data RTree a = Node a [RTree a]
foldRTree :: (a -> [b] -> b) -> RTree a -> b
foldRTree f (Node x ...
- 53
9
votes
1
answer
2k
views
What is an anamorphism, and how does one look like in C#?
I am trying to wrap my head around the concept of anamorphism.
In functional programming, an anamorphism is a generalization of the concept of unfolds on lists. Formally, anamorphisms are generic ...
- 3,613