Closes and reopens files as necessary so you can always write to a file even if you already have the maximum number of files open. Exports one function.
| cacheout |
Makes sure the file at path is created and accessible through the filehandle also named path. You don't need to invoke cacheout between successive accesses to the same file.
| 8.110. File::Temp | 8.112. FileHandle |
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