Check if file exists

Stream: Is there code for X?

[Adam Topaz]

Do we have some function, with type signature System.FilePath -> IO Bool for example, that checks whether a file exists in the filesystem?

[Adam Topaz]

@loogle System.FilePath -> IO Bool

[loogle]

:search: docs#System.FilePath.walkDir, docs#System.FilePath.walkDir.go

[Kyle Miller]

:search: docs#System.FilePath.pathExists

[Adam Topaz]

BaseIO!

[Kyle Miller]

(@Henrik Böving In the docs System.FilePath is showing up as Lake.FilePath. Do you have any idea why?)

[Scott Morrison]

Oooh, could loogle know about monads?

[Joachim Breitner]

@loogle System.FilePath, "exist"

[loogle]

:shrug: nothing found

[Henrik Böving]

Kyle Miller said:

(Henrik Böving In the docs System.FilePath is showing up as Lake.FilePath. Do you have any idea why?)

O_O no I didn't notice that yet, I'll investigate, thats a fun one

[Joachim Breitner]

@loogle System.FilePath, "Exist"

[loogle]

:search: docs#System.FilePath.pathExists

[Joachim Breitner]

Ok, I should certainly do the match case insensitively

[Mario Carneiro]

also underscore insensitively

[Joachim Breitner]

That's already harder, but you can search for multiple words.

[Mario Carneiro]

it could just be a noncontiguous substring

[Joachim Breitner]

@loogle BaseIO, "File", "Exists"

[loogle]

:search: docs#System.FilePath.pathExists

[Joachim Breitner]

Is the autocompletion algorithm used by VSCode exposed in the libraries somewhere? Is it using some kind of index?

[Julian Berman]

I don't recall what VSCode specifically does, but I like linking to https://github.com/jhawthorn/fzy/blob/master/ALGORITHM.md as both a good overview of possibilities as well as what I personally find most intuitive (the one it implements)