大约有 32,000 项符合查询结果（耗时：0.0451秒） [XML]
Select DISTINCT individual columns in django?
... dictionary, NOT an instance of ProductOrder.
Second, it would be a good idea to read the warning note in the docs about using distinct(). The above example will work but all combinations of distinct() and values() may not.
PS: it is a good idea to use lower case names for fields in a model. In ...
binning data in python with scipy/numpy
...ython that the scipy also have a function specially designed to compute a bidimensional binned statistic for one or more sets of data
import numpy as np
from scipy.stats import binned_statistic_2d
x = np.random.rand(100)
y = np.random.rand(100)
values = np.random.rand(100)
bin_means = binned_stati...
Multiline syntax for piping a heredoc; is this portable?
...y */
So a pipe symbol can be followed by an end-of-line and still be considered part of a pipeline.
share
|
improve this answer
|
follow
|
...
Generate random password string with requirements in javascript
...
Forcing a fixed number of characters is a bad idea. It doesn't improve the quality of the password. Worse, it reduces the number of possible passwords, so that hacking by bruteforcing becomes easier.
To generate a random word consisting of alphanumeric characters, use:
...
Do event handlers stop garbage collection from occurring?
...sher. 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.
– supercat
Apr 13 '12 at 15:37
...
What does Bump Version stand for?
...
@Alexey One technical consideration I have about version bump (only in the context of sbt and Maven projects) is that development should only happen with -SNAPSHOT versions. This also helps avoid two people bumping the version unaware of each other. 1...
How to modify Github pull request？
I've opened a pull request to a project. The maintainer has decided to accept it, but told me to modify some contents.
4 A...
JavaScript error (Uncaught SyntaxError: Unexpected end of input)
...
This error is mainly caused by empty returned ajax calls, when trying to parse an empty JSON.
To solve this test if the returned data is empty
$.ajax({
url: url,
type: "get",
dataType: "json",
success: function (response) {
if(response.data.length...
Create code first, many to many, with additional fields in association table
...; mc.Comment);
I guess that lazy loading will fetch the comments automatically behind the scenes.
Edit
Just for fun a few examples more how to add entities and relationships and how to delete them in this model:
1) Create one member and two comments of this member:
var member1 = new Member { F...
How do I wrap link_to around some html ruby code?
... html-code-here
<% end %>
But I'm quite sure that to nest a div inside a a tag is not valid HTML.
EDIT: Added = character per Amin Ariana's comment below.
share
|
improve this answer
...