大约有 48,000 项符合查询结果（耗时：0.0507秒） [XML]
How do I do an OR filter in a Django query?
...
There is Q objects that allow to complex lookups. Example:
from django.db.models import Q
Item.objects.filter(Q(creator=owner) | Q(moderated=False))
share
|
improve this answer
...
How do you create nested dict in Python?
...t;> d
{'dict1': {'innerkey': 'value'}}
You can also use a defaultdict from the collections package to facilitate creating nested dictionaries.
>>> import collections
>>> d = collections.defaultdict(dict)
>>> d['dict1']['innerkey'] = 'value'
>>> d # currentl...
Why is jquery's .ajax() method not sending my session cookie?
...cript.
This may be a Cross Domain Problem.
Maybe you tried to call a url from www.domain-a.com while your calling script was on www.domain-b.com (In other words: You made a Cross Domain Call in which case the browser won't sent any cookies to protect your privacy).
In this case your options are:
...
For-each over an array in JavaScript
...rue and omitting the ones where it returns false)
map (creates a new array from the values returned by the callback)
reduce (builds up a value by repeatedly calling the callback, passing in previous values; see the spec for the details; useful for summing the contents of an array and many other thin...
Exec : display stdout “live”
...tdout/stderr events (spawn.stdout.on('data',callback..)) as they happen.
From NodeJS documentation:
var spawn = require('child_process').spawn,
ls = spawn('ls', ['-lh', '/usr']);
ls.stdout.on('data', function (data) {
console.log('stdout: ' + data.toString());
});
ls.stderr.on('data'...
Include all existing fields and add new fields to document
...reason, why, because aggregation is mostly created to group/calculate data from collection fields (sum, avg, etc.) and return all the collection's fields is not direct purpose.
share
|
improve this ...
In Python, how do you convert a `datetime` object to seconds?
...
Consider using: datetime.datetime.utcfromtimestamp(0) I've used this to get the 'epoch' easily. Note that epoch is not always the same on all systems.
– D. A.
Nov 5 '13 at 20:04
...
Facebook Architecture [closed]
... also think about your database too. You're most likely serving up content from a database, so check out MongoDB and other types of databases that are schema-less and document-oriented. They are much much faster and better for the most "common" type of web site/app.
Look at NEW companies like Four...
How do I prevent Eclipse from hanging on startup?
...oned on the other answer did not. I didn't seem to lose anything critical from my workspace by deleting this file.
– User1
Feb 16 '11 at 15:48
...
Is it bad practice to have a constructor function return a Promise?
...ing platform and it has many async operations going on inside. These range from grabbing the posts from directories, parsing them, sending them through template engines, etc.
...