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Replacement for “rename” in dplyr
I like plyr's renaming function rename . I have recently started using dplyr, and was wondering if there is an easy way to rename variables using a function from dplyr, that is as easy to use as to plyr's rename ?
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Batch file include external file for variables
I have a batch file and I want to include external file containing some variables (say configuration variables). Is it possible?
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How to split a column into two columns?
I have a data frame with one column and I'd like to split it into two columns, with one column header as ' fips' and the other 'row'
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LINQ Select Distinct with Anonymous Types
So I have a collection of objects. The exact type isn't important. From it I want to extract all the unique pairs of a pair of particular properties, thusly:
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How would you do a “not in” query with LINQ?
I have two collections which have property Email in both collections. I need to get a list of the items in the first list where Email does not exist in the second list. With SQL I would just use "not in", but I do not know the equivalent in LINQ. How is that done?
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How can I read a function's signature including default argument values?
Given a function object, how can I get its signature? For example, for:
8 Answers
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Is there a documented way to set the iPhone orientation?
I have an app where I would like to support device rotation in certain views but other don't particularly make sense in Landscape mode, so as I swapping the views out I would like to force the rotation to be set to portrait.
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How do I get the height and width of the Android Navigation Bar programmatically?
The black navigation bar on the bottom of the screen is not easily removable in Android. It has been part of Android since 3.0 as a replacement for hardware buttons. Here is a picture:
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...; arraylist , is arraylist.removeAll(arraylist) equivalent to arraylist.clear() ?
9 Answers
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How can I determine if a .NET assembly was built for x86 or x64?
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