大约有 47,000 项符合查询结果（耗时：0.0470秒） [XML]
Reload django object from database
...
As of Django 1.8 refreshing objects is built in. Link to docs.
def test_update_result(self):
obj = MyModel.objects.create(val=1)
MyModel.objects.filter(pk=obj.pk).update(val=F('val') + 1)
# At this point obj.val is still 1, b...
How to add Action Bar from support library into PreferenceActivity?
Action Bar compatibility has been added into support library, revision 18. It now has ActionBarActivity class for creating activities with Action Bar on older versions of Android.
...
How to do a git diff on moved/renamed file?
...
145
You need to use -M to let git autodetect the moved file when diffing. Using just git diff as k...
Border in shape xml
...
|
edited Jun 17 '19 at 12:44
Christian
21k3232 gold badges108108 silver badges183183 bronze badges
...
The Ruby %r{ } expression
...t
\s # white space char
(group) # first group
(?:alt1|alt2) # some alternation
end
}x
share
|
improve this answer
|
follow
|
...
Xcode 4.2 - declaration of '…' will not be visible outside of this function warning
...
1 Answer
1
Active
...
argparse module How to add option without any argument?
...
|
edited May 23 '17 at 12:18
Community♦
111 silver badge
answered Mar 11 '11 at 10:25
...
Accessing a class's constants
...
answered Jun 21 '11 at 15:09
Dylan MarkowDylan Markow
115k2323 gold badges272272 silver badges195195 bronze badges
...
Batch file to copy directories recursively
...
179
Look into xcopy, which will recursively copy files and subdirectories.
There are examples, 2/...
How to add 10 days to current time in Rails
...
Use
Time.now + 10.days
or even
10.days.from_now
Both definitely work. Are you sure you're in Rails and not just Ruby?
If you definitely are in Rails, where are you trying to run this from? Note that Active Support has to be loaded.
...