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Quickly reading very large tables as dataframes
I have very large tables (30 million rows) that I would like to load as a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead o...
ssh remote host identification has changed
I've reinstalled my server and I am getting these messages:
28 Answers
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Single TextView with multiple colored text
As the title says, I want to know is it possible to achieve two different colored characters in a single textview element.
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Change text color based on brightness of the covered background area?
I've thought about the following for a while already, so now I want to know your opinions, possible solutions, and so on.
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How to change theme for AlertDialog
I was wondering if someone could help me out. I am trying to create a custom AlertDialog. In order to do this, I added the following line of code in styles.xml
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Is there a Newline constant defined in Java like Environment.Newline in C#?
In C# there is the static property Environment.Newline that changed depending on the running platform.
3 Answers
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Replace selector images programmatically
I have an ImageView that has a drawable image resource set to a selector. How do I programmatically access the selector and change the images of the highlighted and non-highlighted state?
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Mongod complains that there is no /data/db folder
I am using my new mac for the first time today. I am following the get started guide on the mongodb.org up until the step where one creates the /data/db directory. btw, I used the homebrew route.
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Place cursor at the end of text in EditText
I am changing the value of an EditText on keyListener .
25 Answers
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Handling a Menu Item Click Event - Android
I want to create an intent that starts a new activity once a Menu Item is clicked, but I'm not sure how to do this. I've been reading through the android documentation, but my implementation isn't correct..and some guidance in the right direction would help. I've listed my code below and commented o...