大约有 31,500 项符合查询结果（耗时：0.0361秒） [XML]
Django: Why do some model fields clash with each other?
...
You have two foreign keys to User. Django automatically creates a reverse relation from User back to GameClaim, which is usually gameclaim_set. However, because you have two FKs, you would have two gameclaim_set attributes, which is obviously impossible. So you need to tell D...
Put buttons at bottom of screen with LinearLayout?
...d:gravity="center|bottom"
Notice that fill_parent does not mean "take up all available space". However, if you use layout_height="0dp" with layout_weight="1", then a view will take up all available space (Can't get proper layout with "fill_parent").
Here is some code I quickly wrote up that uses ...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
... a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major.
...
Easy way to print Perl array? (with a little formatting)
...
Or, if you want to be really dirty: {local $,=', ';print @array}.
– musiKk
Apr 21 '11 at 7:57
10
...
Eclipse: Enable autocomplete / content assist
...
If you would like to use autocomplete all the time without having to worry about hitting Ctrl + Spacebar or your own keyboard shortcut, you can make the following adjustment in the Eclipse preferences to trigger autocomplete simply by typing several different cha...
How do you design object oriented projects? [closed]
.... If you're a Java developer, NetBeans 6.7 from Sun has a UML module that allows for diagramming as well as round-trip engineering and it's FREE. Eclipse (an open source Java IDE), also has a modeling framework, but I have no experience with it. You may also want to try out ArgoUML, an open sour...
Why and not taking font-family and font-size from body?
...
All browsers have built-in default stylesheets. That's why, when you make a page without any styles defined at all, <h1> tags are large and bold, and <strong> makes text bold. Similarly, the font styles for <in...
Controlling the screenshot in the iOS 7 multitasking switcher
...ome information regarding the new multitasking switcher in iOS 7 and especially the screenshot that the OS takes when the app is going into hibernation.
...
How to try convert a string to a Guid [duplicate]
...
Specifically, a GUIDConverter, which is built in. msdn.microsoft.com/en-us/library/…
– Joseph Ferris
Dec 8 '08 at 19:11
...
How to implement one-to-one, one-to-many and many-to-many relationships while designing tables?
...ss_id, student_id # the junction table
Example queries:
-- Getting all students for a class:
SELECT s.student_id, last_name
FROM student_classes sc
INNER JOIN students s ON s.student_id = sc.student_id
WHERE sc.class_id = X
-- Getting all classes for a student:
SELEC...