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The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or
R provides two different methods for accessing the elements of a list or data.frame: [] and [[]] .
12 Answers
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How can you make a custom keyboard in Android?
I want to make a custom keyboard. I don't know how to do it using XML and Java. The following picture is a model of the keyboard I want to make. It only needs numbers.
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Converting int to bytes in Python 3
I was trying to build this bytes object in Python 3:
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Android Left to Right slide animation
I have three activities whose launch modes are single instance.
Using onfling() , I swing them left and right.
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How do I write output in same place on the console?
I am new to python and am writing some scripts to automate downloading files from FTP servers, etc. I want to show the progress of the download, but I want it to stay in the same position, such as:
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How to create a Custom Dialog box in android?
I want to create a custom dialog box like below
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Why can't R's ifelse statements return vectors?
I've found R's ifelse statements to be pretty handy from time to time. For example:
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Evenly distributing n points on a sphere
I need an algorithm that can give me positions around a sphere for N points (less than 20, probably) that vaguely spreads them out. There's no need for "perfection", but I just need it so none of them are bunched together.
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How to change MenuItem icon in ActionBar programmatically
How to change MenuItem icon in ActionBar programmatically? I tried to use
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