大约有 800 项符合查询结果（耗时：0.0222秒） [XML]
Drop columns whose name contains a specific string from pandas DataFrame
... test2
0 NaN 2.0 NaN NaN 1.0
1 20.0 NaN 10.0 5.0 NaN
Now filter
df.filter(like='result',axis=1)
Get..
result1 result34
0 2.0 NaN
1 NaN 10.0
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iOS Simulator failed to install the application
...n is:
From menu, iOS Simulator, Reset Content and Settings.
Close XCode 5.0: close project and close it from Dock and re-open the project and launch again, like in Windows :)
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MySQL select where column is not empty
...L, IS NOT NULL operators.
MySql reference http://dev.mysql.com/doc/refman/5.0/en/working-with-null.html
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Maximum number of threads in a .NET app?
... How did you figure this out? Do you know what .NET 4.5 is, or what 5.0 will be?
– goodguys_activate
Oct 21 '12 at 13:31
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MySQL root password change
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dev.mysql.com/doc/refman/5.0/en/resetting-permissions.html shows how to do this with --init-file= if your looked out.
– sabgenton
Sep 13 '13 at 17:25
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Where do I set my company name?
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I have tested on the Xcode 4.2 Beta 7 (iOS 5.0).
It seems like the Xcode does not retrieve ORGANIZATIONNAME from neither
defaults write com.apple.Xcode PBXCustomTemplateMacroDefinitions
'{ORGANIZATIONNAME="YourNameHere";}'
nor
~/Library/Preferences/com.ap...
1052: Column 'id' in field list is ambiguous
...y ID limit 0, 51
Here's the docs for it https://dev.mysql.com/doc/refman/5.0/en/union.html
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Ordering by the order of values in a SQL IN() clause
... For MySQL, FIELD_IN_SET() could also be used: dev.mysql.com/doc/refman/5.0/en/…
– Darryl Hein
Dec 28 '08 at 23:23
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How do you uninstall all dependencies listed in package.json (NPM)?
... and run the same command.
EDIT: This command breaks with npm 3.3.6 (Node 5.0). I'm now using the following Bash command, which I've mapped to npm_uninstall_all in my .bashrc file:
npm uninstall `ls -1 node_modules | tr '/\n' ' '`
Added bonus? it's way faster!
https://github.com/npm/npm/issues/...
Initializing C# auto-properties [duplicate]
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"Jon Skeet has already written a book about C# 5.0; it’s currently sealed up. In three years, Anders Hejlsberg is going to open the book to see if the language design team got it right." meta.stackexchange.com/a/9174
– Dmitry Fedorkov
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