大约有 40,000 项符合查询结果（耗时：0.0378秒） [XML]
EF Migrations: Rollback last applied migration?
...value. Likewise, if you have applied migrations A, B, C, D, and E (in that order), then the ordinal 1 should refer to A, ordinal 2 should refer to B, and so on. So to rollback to B you could use either:
Update-Database -TargetMigration:"B"
or
Update-Database -TargetMigration:2
Edit October 201...
Get users by name property using Firebase
....
In October 2014, Firebase rolled out new querying functionality via the orderByChild() method, that enables you to do this type of query quickly and efficiently. See the updated answer below.
When writing data to Firebase, you have a few different options which will reflect different use case...
How to store standard error in a variable
...up a couple of extra file descriptors to manage the redirections needed in order to do this.
#!/bin/bash
exec 3>&1 4>&2 #set up extra file descriptors
error=$( { ./useless.sh | sed 's/Output/Useless/' 2>&4 1>&3; } 2>&1 )
echo "The message is \"${error}.\""
exec...
Launch custom android application from android browser
...k to twitter in the browser, they will be asked what application to use in order to complete the action: the browser or your application.
Of course, if you want to provide tight integration between your website and your app, you can define your own scheme:
<intent-filter>
<data androi...
How to JSON serialize sets?
...Python set that contains objects with __hash__ and __eq__ methods in order to make certain no duplicates are included in the collection.
...
How to detect user inactivity in Android
...ier). As for the onStop(), from what I remember, I call onBackPressed() in order to return to a login screen in the disconnect callback which in turn calls the onStop() method. When the user returns to the login screen manually, by pressing back, the timer needs to be stopped as well thus the stopDi...
How to trim whitespace from a Bash variable?
...ce it's much faster, avoiding any fork(). On Cygwin difference in speed is orders of magnitude.
– Gene Pavlovsky
Jul 3 '16 at 9:33
9
...
How do I bind to list of checkbox values with AngularJS?
...blem with using objects as data source. That is, because by definition the order of objects properties is undefined, one can't provide a definite order when displaying the checkboxes. Still +1 ;)
– Yoshi
Sep 17 '14 at 16:28
...
List of foreign keys and the tables they reference
...
@roshan Now that you mention it, the column order feels a bit odd :) Obviously five years ago I wouldn't have thought that this answer would be viewed by so many!
– Vincent Malgrat
May 22 '14 at 8:03
...
Remote origin already exists on 'git push' to a new repository
...
check this answer in order to force the url.
– srodriguex
Jun 5 '14 at 21:32
...