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Easiest way to rename a model using Django/South?
...
Beware that this will not rename indexes on that table. If you create a new table in the future with the same name as the old table, you can get errors from index names colliding. We were using this technique, but from now on we are going to explicitly creat...
How to “perfectly” override a dict?
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You can write an object that behaves like a dict quite easily with ABCs (Abstract Base Classes) from the collections.abc module. It even tells you if you missed a method, so below is the minimal version that shuts the ABC up.
from collections.abc import MutableMapping
c...
Where to put view-specific javascript files in an ASP.NET MVC application?
...view:
You can access it directly:
http://yourdomain.com/YourController/Index.js
Below is the source:
namespace JavaScriptViews {
public class JavaScriptActionDescriptor : ActionDescriptor
{
private string actionName;
private ControllerDescriptor controllerDescripto...
Monad in plain English? (For the OOP programmer with no FP background)
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UPDATE: This question was the subject of an immensely long blog series, which you can read at Monads — thanks for the great question!
In terms that an OOP programmer would understand (without any functional programming background), ...
Most efficient way to store thousand telephone numbers
...very efficient version of trie, that only uses as little as needed for the indexing and only two levels. In practice it would be nice to see if this can beat a trie with more levels, but I think this depends a lot on the distribution of the numbers (In real live phone numbers are not fully random, b...
How to disable HTML links
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Focus
In conjunction with above described CSS technique you may use tabindex in a non-standard way to prevent an element to be focused:
<a href="#" disabled tabindex="-1">...</a>
I never checked its compatibility with many browsers then you may want to test it by yourself before u...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
... is now in state RECOVERING
Sun Dec 29 20:26:42.201 [slaveTracking] build index local.slaves { _id: 1 }
Sun Dec 29 20:26:42.207 [slaveTracking] build index done. scanned 0 total records. 0.005 secs
Sun Dec 29 20:26:43.079 [rsHealthPoll] replSet member 192.168.1.136:27017 is now in state SECONDAR...
Phase • Animations made easy! - Extensions - Kodular Community
...osition: absolute;
left: 0;
top: 0;
width: 100%;
z-index: 1001;
--animation-state: paused;
}
#d-splash .preloader-image {
max-width: 100%;
height: 100vh;
}
#d-splash .preloader-text-wrapper {
position: absolute;
opacity: 0;
...
Local variables in nested functions
...ified, then bound as closure cells to the function, with the code using an index to reference each cell. pet_function thus has one free variable (cage) which is then referenced via a closure cell, index 0. The closure itself points to the local variable cage in the get_petters function.
When you ac...
The case against checked exceptions
...a read-only list we need to implement only two methods: size() and get(int index).
This example WidgetList class reads some fixed-size objects of type Widget (not shown) from a file:
class WidgetList extends AbstractList<Widget> {
private static final int SIZE_OF_WIDGET = 100;
privat...