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Is there a decorator to simply cache function return values?
... is periodically called with the same arguments.
Example of an LRU cache for computing Fibonacci numbers:
@lru_cache(maxsize=None)
def fib(n):
if n < 2:
return n
return fib(n-1) + fib(n-2)
>>> print([fib(n) for n in range(16)])
[0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89...
C default arguments
...y would be to write a varargs function and manually fill in default values for arguments which the caller doesn't pass.
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How do I import the Django DoesNotExist exception?
...em is that you are calling the get method - which raises the exception - before it is passed to assertRaises. You need to separate the arguments from the callable, as described in the unittest documentation:
self.assertRaises(Answer.DoesNotExist, Answer.objects.get, body__exact='<p>User can r...
Access data in package subdirectory
...
This actually worked for me. Did not have any problems. I am using python 3.6
– Jorge
Jan 4 '19 at 13:07
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C++ equivalent of java's instanceof
...ign of poor design.
Typical workarounds is putting the special behaviour for the class you are checking for into a virtual function on the base class or perhaps introducing something like a visitor where you can introduce specific behaviour for subclasses without changing the interface (except for...
performSelector may cause a leak because its selector is unknown
...
Solution
The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored, and it's easy to work around. Here's how:
if (!_controller) { return; }
SEL selector = NSSelectorFromString(@"someMethod");
IMP imp = [_controller meth...
ValidateAntiForgeryToken purpose, explanation and example
Could you explain ValidateAntiForgeryToken purpose and show me example about ValidateAntiForgeryToken in MVC 4?
4 Answe...
How do I create some kind of table of content in GitHub wiki?
...ee a little link simple to the left of it, you can also use that link. The format for that link is <project URL#<header name>. The <header name> must be all lower case.
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Determining Referer in PHP
...ginating on my site.
Edit: I am looking to verify that a script that preforms a series of actions is being called from a page on my website.
...
Instagram how to get my user id from username?
...ttps://www.instagram.com/{username}/?__a=1
E.g:
This url will get all information about a user whose username is therock
https://www.instagram.com/therock/?__a=1
Update i June-20-2019, the API is public now. No authentication required.
Update in December-11-2018, I needed to confirm that th...