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关于ORA-00903. 表名无效的错误 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...archar2(2));
使用这个表（或字段）时也要用双引，如：
SELECT a, "b" FROM "mytable";
使用时与创建的名称一致，否则会出“ORA-00903. 表名无效”的错误。ORA 表名无效
CSS3滚动条美化效果 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...当前被激活。(在webkit最近的版本中，该伪类也可以用于::selection伪元素。webkit团队有计划扩展它并推动成为一个标准的伪类)
另外，:enabled、:disabled、:hover 和 :active 等伪类同样可以用于滚动条中。
关于具体的demo，这里不再做...
安卓中PrimaryColor、SecondaryColor、AccentColor的区别 - App Inventor 2...
...控件颜色，比如FloatingButton、TextField、Cursor、ProgressBar、Selection、Links等具体交互性的颜色。
附上Android Material设计图的Color说明
Linq 多字段排序，二次排序 - .NET(C#) - 清泛IT论坛，有思想、有深度
Linq：ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 );
类似SQL：select * from t1 order by f1 desc ,f2 asc
这种写法里 OrderBy、ThenBy 是升序的，OrderByDescending、ThenByDescending 是降序的。
原版安卓模拟器启动失败：GPU Driver Issue - App Inventor 2 离线版 - 清...
Some users have experienced emulator stability issues with this driver version. As a result, we're selecting a compatibility renderer. Please check with your manufacturer to see if there is an updated driver available.
gpt 回答，电脑太旧，不支持现代安卓模拟器：
Visual Studio jump to next error shortcut?
... Important: at least for VS 2017, I needed to in my "error view" have selected both "Build + Intellisense" in order for these shortcuts to work.
– Johan S
Feb 22 '18 at 10:23
...
How can I determine the type of an HTML element in JavaScript?
...eof HTMLInputElement) {} // <input>
elseif (e instanceof HTMLSelectElement) {} // <select>
elseif (e instanceof HTMLTextAreaElement) {} // <textarea>
elseif ( ... ) {} // any interface
Look here for a complete list of interfaces.
...
Copy values from one column to another in the same table
... set str = '';
WHILE x < 5 DO
set str = (select source_col from emp where id=x);
update emp set target_col =str where id=x;
SET x = x + 1;
END WHILE;
END$$
DELIMITER ;
...
How to recover a dropped stash in Git?
...t/ {print $3}'
...or using Powershell for Windows:
git fsck --no-reflog | select-string 'dangling commit' | foreach { $_.ToString().Split(" ")[2] }
This will show you all the commits at the tips of your commit graph which are no longer referenced from any branch or tag – every lost commit, inclu...
Is an entity body allowed for an HTTP DELETE request?
...e it is to delete multiple records at a time (for example, a grid with row-selection check-boxes).
DELETE /messages
[{id:1, version:2},
{id:99, version:3}]
204 No Content
Notice that each message has its own version. Maybe you can specify multiple versions using multiple headers, but by George, t...