| http://www.w3.org/ns/prov#value | - fn doesFolderExist f create:false =-- test whether f exists and is a folder; create it if it does not and create==true( local val val = if (doesFileExist f) and (getfileattribute f #directory) then true else false if not val and create then ( val = makeDir f ) val ) -- alternative using dotNet:((dotnetclass "System.IO.Directory").ex
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