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App Inventor 2 扩展 · App Inventor 2 中文网
...2 Test your extension
3.3 Details on creating extensions
3.3.1 When you start to build
3.3.2 Requesting permissions for the extensions you define
3.2.3 Using external libraries
3.2.4 Choosing a package name for your extension
3.4 Sharing your extension
Acknowledgements
Appendix A: Temporary...
How to set cursor position in EditText?
...the page a text is set in the first EditText, So now cursor will be in the starting place of EditText , I want to set cursor position in the second EditText which contains no data. How to do this?
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Python Process Pool non-daemonic?
...eates the worker processes in its __init__ method, makes them daemonic and starts them, and it is not possible to re-set their daemon attribute to False before they are started (and afterwards it's not allowed anymore). But you can create your own sub-class of multiprocesing.pool.Pool (multiprocessi...
Why are #ifndef and #define used in C++ header files?
I have been seeing code like this usually in the start of header files:
4 Answers
4
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How can I make my flexbox layout take 100% vertical space?
...x;
flex-direction: column;
flex-wrap: nowrap;
justify-content: flex-start;
align-items: stretch;
align-content: stretch;
height: 100%;
}
and set the 3rd row to flex-grow
#row3 {
background-color: green;
flex: 1 1 auto;
display: flex;
}
demo
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Why are Where and Select outperforming just Select?
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It's very interesting that in your results, all methods starts at the same place and diverge, whereas the It'sNotALie's results cross in the middle.
– John Tseng
Aug 20 '13 at 20:41
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NoSql Crash Course/Tutorial [closed]
...mulation. it takes 10 minutes to complete and is a really great way to get started with noSQL!
http://www.mongodb.org/ (click "try it out")
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Loop backwards using indices in Python?
...rgument being the increment to use (documented here).
("range" options, start, stop, step are documented here)
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Search All Fields In All Tables For A Specific Value (Oracle)
...wild goose chase trying to check every column for that value. Can you not start with whatever client application is displaying this value and try to figure out what query it is using to obtain it?
Anyway, diciu's answer gives one method of generating SQL queries to check every column of every tabl...
MySQL table is marked as crashed and last (automatic?) repair failed
... that doesn't work, you can try:
myisamchk -r -v -f $TABLE_NAME
You can start your MySQL server again. On Debian:
sudo service mysql start
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