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| (* interleave 1 [2;3] = [ [1;2;3]; [2;1;3]; [2;3;1] ] *) | |
| let rec interleave x lst = | |
| match lst with | |
| | [] -> [[x]] | |
| | hd::tl -> (x::lst) :: (List.map (fun y -> hd::y) (interleave x tl)) | |
| (*permutations [1; 2; 3] = [[1; 2; 3]; [2; 1; 3]; [2; 3; 1]; [1; 3; 2]; [3; 1; 2]; [3; 2; 1]] *) | |
| let rec permutations lst = | |
| match lst with | |
| | hd::tl -> List.concat (List.map (interleave hd) (permutations tl)) |
glarrain
/ gist:3982485
Created
October 30, 2012 19:37
Decode session data, no matter what hashes say. It helps in some cases where the Session.get_decoded method returns an empty dictionary because it is "suspicious" of user-data tampering. Based on source code from the Django project.
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| import base64 | |
| import pickle | |
| from django.contrib.sessions.models import Session | |
| from django.utils.encoding import force_unicode | |
| def decode_session_data(session_key): | |
| """Decode the data in a session object stored under ``session_key``. |