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Case insensitive string as HashMap key
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Remove columns from dataframe where ALL values are NA
...h will be an object the same size as df.
Here are two approaches that are more memory and time efficient
An approach using Filter
Filter(function(x)!all(is.na(x)), df)
and an approach using data.table (for general time and memory efficiency)
library(data.table)
DT <- as.data.table(df)
DT[,w...
HTML 5 Favicon - Support?
... size as every browser will scale down the image as necessary. I could add more HTML to specify multiple sizes if desired for those with a lower bandwidth but I am already compressing the PNG files heavily using TinyPNG and I find this unnecessary for my purposes. Also, according to philippe_b's ans...
How do I change the default port (9000) that Play uses when I execute the “run” command?
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Set icon for Android application
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Expand a div to fill the remaining width
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Why “no projects found to import”?
... it.......when you press new -> java project .........then there are no more options, you just get the dialog for adding a new project.
– Saher Ahwal
Jul 12 '11 at 18:35
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Writing unit tests in Python: How do I start? [closed]
...hontesting.net/start-here.
There's also extended articles on fixtures, and more there.
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Using “super” in C++
...rick mentioned here, because while this typedef trick is good, it requires more maintenance than a compiler keyword when you change the inheritence hierarchy, and handles multiple inheritence correctly (without requiring two typedefs like super1 and super2). In short, I agree with the other comment...
Create an Android Jar library for distribution
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