I am using Cleanide for Clean3.0
programming language.
What I am trying to do is to implement a function that receive name of a directory in my system, and return a list of all the files in that directory.
I don't know if the defintion of such function needs to be like File -> [string]
or maybe something else, even that directory is a file maybe this is not the developers of Clean
meant...
Thank a lot!
This functionality is not available in the StdEnv environment, but there are two libraries that can help with this:
The Directory library contains a module Directory which has a function
getDirectoryContents :: !Path !*env -> (!(!DirError, [DirEntry]), !*env) | FileSystem env
.The Platform library contains a module System.Directory which has a function
readDirectory :: !FilePath !*w -> (!MaybeOSError [FilePath], !*w)
.In both cases the first argument is a path to the directory and the second argument is the
*World
, which is the typical way of Clean to perform impure operations (see chapter 9 of the language report).Code examples
With Directory:
With Platform: