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On Duplicate Key Update same as insert
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If table tbl already has row (1,10) then: INSERT INTO tbl(id, a) VALUES(1,2) ON DUPLICATE KEY UPDATE a=VALUES(a) will set a = 2. While INSERT INTO tbl(id, a) VALUES(1,2) ON DUPLICATE KEY UPDATE a=a will set a = 10
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Style bottom Line in Android
...ransparent" />
<stroke
android:dashGap="10px"
android:dashWidth="10px"
android:width="1dp"
android:color="#ababb2" />
</shape>
</item>
</layer-list>
Explanation:
The second shape is...
Database development mistakes made by application developers [closed]
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40 Answers
40
Active
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Google Play on Android 4.0 emulator
How can I install the Google Play .apk onto my Android 4.0 emulator?
8 Answers
8
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How to create a directory and give permission in single command
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208
According to mkdir's man page...
mkdir -m 777 dirname
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[精华]VC++对话框程序打印及打印预览的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
... if(!Create(NULL,"打印预览", WS_OVERLAPPEDWINDOW|FWS_ADDTOTITLE,CRect(200,200,500,500)))
TRACE0("Failed to create view window\n");
}
③修改析构函数，让主对话框显示
CMyFrame::~CMyFrame()
{
m_pOldWnd->ShowWindow(SW_SHOW);
}
④用ClassWizard增加WM_Create消息处...
MySQL InnoDB not releasing disk space after deleting data rows from table
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answered Aug 14 '09 at 23:13
Leonel MartinsLeonel Martins
2,46511 gold badge1919 silver badges2424 bronze badges
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Is it possible to ping a server from Javascript?
... not. When I run it from the command line, my page load goes up to a full 60s (for 8 entries, it will scale linearly with more).
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How does one reorder columns in a data frame?
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edited Apr 29 '16 at 16:00
Braiam
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answered S...
Difference between setTimeout with and without quotes and parentheses
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An anonymous function
setTimeout(function(){/* Look mah! No name! */},2000);
A name of an existing function
function foo(){...}
setTimeout(foo, 2000);
A variable that points to an existing function
var foo = function(){...};
setTimeout(foo, 2000);
Do note that I set "variable in a funct...