大约有 10,700 项符合查询结果（耗时：0.0363秒） [XML]
Filtering a list based on a list of booleans
...
How can I select [2, 6] ?
– Florent
May 30 '18 at 21:03
...
What is an SDL renderer?
...r is a struct that handles all rendering. It is tied to a SDL_Window so it can only render within that SDL_Window. It also keeps track the settings related to the rendering. There are several important functions tied to the SDL_Renderer
SDL_SetRenderDrawColor(renderer, r, g, b, a);
This sets th...
Select distinct values from a table field
...= ('city')
Since you may have the Meta class ordering attribute set, you can use order_by() without parameters to clear any ordering when using distinct(). See the documentation under order_by()
If you don’t want any ordering to be applied to a query, not even the default ordering, call orde...
Heroku error: “Permission denied (public key)”
...ls.
Email: sxxxxt.xxxx@gmail.com
Password (typing will be hidden):
Authentication successful.
C:\Users\blue\Documents\GitHub> git clone git@heroku.com:sxxxd-plains-8530.gi
t
Cloning into 'sxxxd-plains-8530'...
Warning: Permanently added 'heroku.com,50.19.85.154' (RSA) to the list of known
hosts.
...
Align button at the bottom of div using CSS
I want to align my button at the bottom right corner of my div. How can I do that?
4 Answers
...
How to read data from a zip file without having to unzip the entire file
...
{
ZipEntry e = zip["MyReport.doc"];
e.Extract(OutputStream);
}
(you can also extract to a file or other destinations).
Reading the zip file's table of contents is as easy as:
using (ZipFile zip = ZipFile.Read(ExistingZipFile))
{
foreach (ZipEntry e in zip)
{
if (header)
{
...
python numpy ValueError: operands could not be broadcast together with shapes
...
dot is matrix multiplication, but * does something else.
We have two arrays:
X, shape (97,2)
y, shape (2,1)
With Numpy arrays, the operation
X * y
is done element-wise, but one or both of the values can be expanded in one or more dimension...
How to use RSpec's should_raise with any kind of exception?
...
This doesn't work for me in capybara: expect { visit welcome_path }.to raise_error
– nnyby
Dec 3 '13 at 15:16
add a comment
...
How to import existing *.sql files in PostgreSQL 8.4?
...ostgreSQL 8.4, and I have some *.sql files to import into a database. How can I do so?
5 Answers
...
How to specify font attributes for all elements on an html web page?
...re the rule doesn't make any sense. Depending on the size of the HTML this can slow the page rendering.
– Cesar Canassa
Oct 16 '10 at 7:37
4
...