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type object 'datetime.datetime' has no attribute 'datetime'
... LyonJohn Lyon
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Rails 4 Authenticity Token
I was working on a new Rails 4 app (on Ruby 2.0.0-p0) when I ran into some authenticity token problems.
13 Answers
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How do I delete rows in a data frame?
...'-' operator.
So, assuming the data.frame is called myData:
myData[-c(2, 4, 6), ] # notice the -
Of course, don't forget to "reassign" myData if you wanted to drop those rows entirely---otherwise, R just prints the results.
myData <- myData[-c(2, 4, 6), ]
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qmake: could not find a Qt installation of ''
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ptmonoptmono
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How to print matched regex pattern using awk?
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148
This is the very basic
awk '/pattern/{ print $0 }' file
ask awk to search for pattern using ...
One or more types required to compile a dynamic expression cannot be found. Are you missing referenc
...ady referenced yet I still had this error. I had created a new ASP.Net MVC4 application in VS 2010. Stumped, I removed and readded it, and the error went away. Cleaning/Rebuilding did not help.
– Paul
Mar 22 '13 at 21:54
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Counting the occurrences / frequency of array elements
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jpaugh
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answered Apr 14 '11 at 18:58
Šime VidasŠime V...
How do I detect what .NET Framework versions and service packs are installed?
...5
1.1 HKLM\Software\Microsoft\NET Framework Setup\NDP\v1.1.4322\Install
2.0 HKLM\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727\Install
3.0 HKLM\Software\Microsoft\NET Framework Setup\NDP\v3.0\Setup\InstallSuccess
3.5 HKLM\Softwa...
Suppress Scientific Notation in Numpy When Creating Array From Nested List
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4 Answers
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Active
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Using ViewPagerIndicator library with Android Studio and Gradle
...dd that dependency :
compile 'fr.avianey.com.viewpagerindicator:library:2.4.1.1@aar'
And declare maven central like this :
repositories {
mavenCentral()
}
Hope it helps...
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