大约有 40,000 项符合查询结果（耗时：0.0412秒） [XML]
Django: Get an object form the DB, or 'None' if nothing matches
... cases where your logic expects there to be only a single object (which is selected by first()), but in reality multiple objects exist. Using get() instead of first() gives you an extra layer of protection, by raising MultipleObjectsReturned(). If the result being returned is not expected to return ...
WordPress is giving me 404 page not found for all pages except the homepage
...n interface do the following:
Go to admin setting
Click on permalink and select post name in radio button.
Scroll down and you will see .htaccess code here like.
<IfModule mod_rewrite.c>
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FIL...
(Mac) -bash: __git_ps1: command not found
... export PS1='\t H#\! \u:\w$(__git_ps1 "{%s}") -->> '
Option 2: Add a selection script
if [ -f ~/.git-completion.bash ]; then
export PS1='\w$(__git_ps1 "(%s)") > '
fi
Save and use the profile: source ~/.bash_profile or source ~/.bashrc
Now you should see the git prompt working prop...
Why I can't change directories using “cd”?
...
To make a bash script that will cd to a select directory :
Create the script file
#!/bin/sh
# file : /scripts/cdjava
#
cd /home/askgelal/projects/java
Then create an alias in your startup file.
#!/bin/sh
# file /scripts/mastercode.sh
#
alias cdjava='. /scrip...
How to identify unused css definitions
...xtension Dust-Me at https://addons.mozilla.org/en-US/firefox/addon/dust-me-selectors/.
share
|
improve this answer
|
follow
|
...
Save the console.log in Chrome to a file
... save the console output to a file natively
Open the console
Right-click
Select "save as.."
Chrome Developer instructions here.
share
|
improve this answer
|
follow
...
Python: Get relative path from comparing two absolute paths
...PurePath.parents()), taking the intersection of all these parent sets, and selecting the longest common prefix.
PPPPPS: Python 3.5 introduced a proper solution to this question: os.path.commonpath(), which returns a valid path.
...
html onchange event not working
...ck into a field and get a dropdown of previously entered text, and you can select from among your choices using a mouse click. Keystroke trapping will not detect either of these types of changes.
Sadly, there is no "onchange" event that reports changes immediately, at least as far as I know. But th...
Why does Oracle 9i treat an empty string as NULL?
...
@sehe the confusing bit for me is select 1 from dual where ('' is null)
– matt freake
Aug 22 '13 at 15:58
|
...
How to theme the ENTIRE Xcode IDE to light-on-dark?
...ground by going into preferences ⌘., then go to Fonts & Colors, then select the Console. Now you can edit its background:
Just be sure to edit the font colors of the various input and outputs texts if you choose black. By default all of the input/output fonts are black, only the console pro...