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Tips from NDC Oslo 2019–F# Interactive built-in constants

Reading other files through F# Interactive can be tricky when using relative paths. It’s hard to guess what F# Interactive will use as the working directory. Of course you can start using absolute paths but a better alternative is using the built-in constants; 

__SOURCE_DIRECTORY__
__SOURCE_FILE__

This allows you to do the following:

let path = System.IO.Path.Combine(__SOURCE_DIRECTORY__,"sample.txt")
System.IO.File.ReadAllText path
view raw BuiltInConstants.fsx hosted with ❤ by GitHub
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