file_systems:directory_must_exist/2

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Predicate directory_must_exist/2

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dialect
- sicstus4

directory_must_exist(+Directory) is det
directory_must_exist(+Directory, +Mode) is det: Ensure that a directory exists at path Directory and can be accessed according to Mode (defaults to exist). Otherwise an exception is thrown. Accepts the same access modes as absolute_file_name/3's access option.