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Django: Redirect to previous page after login
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Actually this is not a good idea, you will find the query string very very long if you have too many clicks
– dspjm
Jun 21 '14 at 12:31
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Set opacity of background image without affecting child elements
... @mystrdat You're already downloading the image, this isn't an extra request.
– brad
Feb 22 '13 at 4:47
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Is 1.0 a valid output from std::generate_canonical?
...curs quite often in real-world calculations) when x is close to zero. The "extra precision" near multiples of π is generally just a side effect of that.
– Ilmari Karonen
Sep 4 '14 at 20:16
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Resize image in PHP
... imagecreatefromgd, imagecreatefromgif, imagecreatefrompng, imagecreatefromstring, imagecreatefromwbmp, imagecreatefromxbm, imagecreatefromxpm to deal with different image types.
– Chris Hanson
Feb 1 '13 at 15:50
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What is the relative performance difference of if/else versus switch statement in Java?
... First create some interface:
public interface Action {
void execute(String input);
}
And get hold of all implementations in some Map. You can do this either statically or dynamically:
Map<String, Action> actions = new HashMap<String, Action>();
Finally replace the if/else or ...
How can I time a code segment for testing performance with Pythons timeit?
...de into a function is a step I was looking for -since simply making code a string and evaling is not going to fly for anything not completely trivial. thx
– javadba
Sep 28 '18 at 22:18
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Django “xxxxxx Object” display customization in admin action sidebar
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The string you're seeing is coming from __unicode__ method, as others have mentioned. But the thing is that admin saves string representation of an object when it creates log event, therefore if you add __unicode__ implementation...
Designing function f(f(n)) == -n
...oof of why such a function can't exist, for all numbers, if it doesn't use extra information(except 32bits of int):
We must have f(0) = 0. (Proof: Suppose f(0) = x. Then f(x) = f(f(0)) = -0 = 0. Now, -x = f(f(x)) = f(0) = x, which means that x = 0.)
Further, for any x and y, suppose f(x) = y. We w...
ObjectiveC Parse Integer from String
I'm trying to extract a string (which contains an integer) from an array and then use it as an int in a function. I'm trying to convert it to a int using intValue.
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Safe characters for friendly url [closed]
...etter off using a "white list" of allowed characters and then encoding the string rather than trying to stay abreast of characters that are disallowed by servers and systems.
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