大约有 40,000 项符合查询结果（耗时：0.0593秒） [XML]
Why is “if not someobj:” better than “if someobj == None:” in Python?
...bject has a __len__ special method (as do container built-ins, list, dict, set, tuple, ...), it calls this method, considering a container False if it is empty (length is zero).
Otherwise, the object is considered True unless it is None in which case, it is considered False.
In the second test, th...
On localhost, how do I pick a free port number?
...cket.AF_INET, socket.SOCK_STREAM)) as s:
s.bind(('', 0))
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
return s.getsockname()[1]
share
|
improve this answer
...
How do you get AngularJS to bind to the title attribute of an A tag?
...at would otherwise be eagerly processed by browsers. The attribute will be set only when the binding is done. The prefix is then removed:
<!-- do this -->
<a ng-attr-title="{{product.shortDesc}}" ...>
(Ensure that you are not using a very earlier version of Angular). Here's a demo fid...
How do I detach objects in Entity Framework Code First?
.... If you want to detach an object that is already attached to the context, set the state to Detached. If you want to load entities from the DB without attaching them at all to the context (no change tracking), use AsNoTracking.
– Slauma
Feb 6 '13 at 12:47
...
How to use a RELATIVE path with AuthUserFile in htaccess?
...or have different versions in my codebase, and have the deployment process set it all up (i. e. replace placeholders or rename / move the appropriate file).
On Java projects, I use Maven to do this type of work, on, say, PHP projects, I like to have a build.sh and / or install.sh shell script that ...
How can I modify the size of column in a MySQL table?
...e foo;
CREATE TABLE `foo` (
`str` mediumtext
) ENGINE=MyISAM DEFAULT CHARSET=latin1
1 row in set (0.00 sec)
I misread your original question, you want VARCHAR(65353), which MySQL can do, as long as that column size summed with the other columns in the table doesn't exceed 65535.
mysql> creat...
Create array of all integers between two numbers, inclusive, in Javascript/jQuery [duplicate]
...
fastest way
while-- is faster on most browsers
direct setting a variable is faster than push
function:
var x=function(a,b,c,d){d=[];c=b-a+1;while(c--){d[c]=b--}return d},
theArray=x(lowEnd,highEnd);
or
var arr=[],c=highEnd-lowEnd+1;
while(c--){arr[c]=highEnd--}
EDIT
...
How do you do a limit query in JPQL or HQL?
...3:
Limit was never a supported clause
in HQL. You are meant to use
setMaxResults().
So if it worked in Hibernate 2, it seems that was by coincidence, rather than by design. I think this was because the Hibernate 2 HQL parser would replace the bits of the query that it recognised as HQL, an...
AsyncTaskLoader vs AsyncTask
...y to load old cached data until new data is returned by forceLoad()
We can set delays to AsyncTaskLoader by setUpdateThrottle() which can prevent consecutive updates to client (Activity/Fragment)
AsyncTaskLoader can be shared to multiple fragments if they have common parent activity and if it was st...
Qt: *.pro vs *.pri
...share the functionality, essentially.
You will be able to write the common settings and code into those .pri files and include them from several .pro files as the need arises. This is how you would use it in practice:
foo.pri
FOO = BAR
hello.pro
...
include($$PWD/foo.pri)
...
world.pro
...
include...