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How to convert a negative number to positive?
How can I convert a negative number to positive in Python? (And keep a positive one.)
6 Answers
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Append value to empty vector in R?
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FWIW: analogous to python's append():
b <- 1
b <- c(b, 2)
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How do I change the background color with JavaScript?
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AJAX is getting data from the server using Javascript and XML in an asynchronous fashion. Unless you want to download the colour code from the server, that's not what you're really aiming for!
But otherwise you can set the CSS background with Javascript. If you're using a framework...
How to hide status bar in Android
...roid:windowSoftInputMode=adjustResize" for the activity in AndroidManifest.xml. You can find details here.
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What is an anti-pattern?
... <do something>; except: pass may be the Cardinal Sin antipattern in Python. See this: realpython.com/blog/python/…
– eric
Dec 14 '17 at 15:48
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run main class of Maven project [duplicate]
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If you're doing this regularly, you can add the parameters into the pom.xml as well:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
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Normalize data in pandas
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Slightly modified from: Python Pandas Dataframe: Normalize data between 0.01 and 0.99? but from some of the comments thought it was relevant (sorry if considered a repost though...)
I wanted customized normalization in that regular percentile of da...
Difference between Pig and Hive? Why have both? [closed]
... by analysts comfortable with SQL as well as by data miners programming in Python. SQL compatibility efforts in Pig have been abandoned AFAIK - so the difference between the two projects is very clear.
Supporting SQL syntax also means that it's possible to integrate with existing BI tools like Micr...
Is there a way to make mv create the directory to be moved to if it doesn't exist?
...irectories just like this: (supposed I want to create a subdirectory named python):
mkdir -p my_PDF/python && mv *.pdf $_
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How to check for an undefined or null variable in JavaScript?
...se
> Boolean(undefined) //false
all return false, which is similar to Python's check of empty variables.
So if you want to write conditional logic around a variable, just say
if (Boolean(myvar)){
// Do something
}
here "null" or "empty string" or "undefined" will be handled efficiently.
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