Flowdock
exists?(p1) public

?

Returns true if the named file is a directory, false otherwise.

File.directory?(".")
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April 26, 2012 - (v1_9_3_125)
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Dir

The documentation is using File.directory?(“/path/to/directory”), but the method being referred to is Dir.exists?().

Dir.exists?(".")
 => true

The source code is the same as File.directory?().