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In this guide, we will discuss Erlang is_dir. This method is used to determine if a directory is indeed a directory. This method is a part of the filelib library.

Syntax

is_dir(directoryname)

Parameters

• directoryname − This is the directory name for which it needs to be determined if it is a directory or not.

Return Value

True, if the directory exists and is indeed a directory.

For example

-module(helloworld). 
-export([start/0]). 

start() -> 
   io:fwrite("~p~n",[filelib:is_dir("newdir")]).

Output

If the directory exists, the output will be true.

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