大约有 47,000 项符合查询结果（耗时：0.0547秒） [XML]
Django - limiting query results
I want to take the last 10 instances of a model and have this code:
5 Answers
5
...
How to revert a Git Submodule pointer to the commit stored in the containing repository?
... |
edited Sep 15 at 1:10
answered Oct 24 '11 at 23:28
Br...
How to check if a column exists in Pandas
...not present in df
– Robvh
Feb 5 at 10:59
add a comment
|
...
How do you create nested dict in Python?
...ers
f.next()
# get first colum as keys
keys = (line.split(',')[0] for line in f)
# create empty dictionary:
d = {}
# read from file b.csv
with open(b_file) as f:
# gather headers except first key header
headers = f.next().split(',')[1:]
# iterate lines
for line in f:
...
How to lose margin/padding in UITextView?
...
401
Up-to-date for 2019
It is one of the silliest bugs in iOS.
The class given here, UITextViewFixe...
How do I browse an old revision of a Subversion repository through the web view?
...Bert Huijben's comment:
If your repository is hosted using Subversion 1.6.0 or later, you can
use example.com/svnrepository/?p=3 for the same result... This method
/is/ documented. (?r= revision of the file, ?p= operational revision
of the URL). See the subversion 1.6 release notes
...
How do I get the function name inside a function in PHP?
...
totymedli
20.9k1818 gold badges102102 silver badges135135 bronze badges
answered Jun 17 '09 at 10:33
Silfverstro...
Boolean vs tinyint(1) for boolean values in MySQL
...
answered Sep 20 '10 at 13:26
Māris KiseļovsMāris Kiseļovs
14.9k55 gold badges3737 silver badges4848 bronze badges
...
Is there a python equivalent of Ruby's 'rvm'?
...
answered May 11 '10 at 16:27
Olivier VerdierOlivier Verdier
39.3k2626 gold badges9292 silver badges8989 bronze badges
...
Does ARC support dispatch queues?
... now for the long answer…
If your deployment target is lower than iOS 6.0 or Mac OS X 10.8
You need to use dispatch_retain and dispatch_release on your queue. ARC does not manage them.
If your deployment target is iOS 6.0 or Mac OS X 10.8 or later
ARC will manage your queue for you. You do ...