大约有 40,000 项符合查询结果（耗时：0.0564秒） [XML]
How exactly do Django content types work?
...Blah blah, let's dive into some code and see what I mean.
# ourapp.models
from django.conf import settings
from django.db import models
# Assign the User model in case it has been "swapped"
User = settings.AUTH_USER_MODEL
# Create your models here
class Post(models.Model):
author = models.Forei...
How to add an email attachment from a byte array?
... FWIW, Mono's Attachment class calls Dispose on the content stream, and from a quick test case, .NET 4.0 does the same. I'm not super-amused that this is the case, but there it is.
– Matt Enright
May 19 '11 at 22:12
...
Is there an expression for an infinite generator?
...
The /dev/urandom solution hinges on \ns appearing from time to time... Devious! :)
– hugomg
Apr 21 '11 at 2:23
add a comment
|
...
what is the difference between a portlet and a servlet?
...hat regulates portal containers and components. This is different standard from standards for web containers (and servlets). Though there are definitely strong parallels between these two standards they differ in containers, APIs, life cycle, configuration, deployment, etc.
The main difference bet...
How to get one value at a time from a generator function in Python?
Very basic question - how to get one value from a generator in Python?
6 Answers
6
...
Do event handlers stop garbage collection from occurring?
...only points one way, a subscriber which has any intention of unsubscribing from an event when done with it will need some form of reference to the publisher. It could be a WeakReference, and in some cases that might be a good idea, but as often as not it will be a strong one.
–...
How to print a percentage value in python?
...3%
If you don't want integer division, you can import Python3's division from __future__:
>>> from __future__ import division
>>> 1 / 3
0.3333333333333333
# The above 33% example would could now be written without the explicit
# float conversion:
>>> print "{0:.0f}%".f...
Append integer to beginning of list in Python [duplicate]
... @KeminZhou I'd prefer the name "prepend" as it follows naturally from "append" as "push_front" follows naturally from "push_back".
– god of llamas
Nov 15 '16 at 0:29
1
...
StringBuilder vs String concatenation in toString() in Java
...erties it might not make a
difference, but at what point do you
switch from concat to builder?
At the point where you're concatenating in a loop - that's usually when the compiler can't substitute StringBuilder by itself.
...
Get average color of image via Javascript
...o the cross-origin restriction if you try to access image data on an image from another domain. Which is a bummer.
– user18015
Mar 4 '12 at 0:15
8
...