Get readonly status
Get readonly status of an ff object
is.readonly(x, ...) ## S3 method for class 'ff' is.readonly(x, ...)
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ff objects can be created/opened with readonly=TRUE.
After each opening of the ff file readonly status is stored in the physical attributes and serves as the default for the next opening.
Thus querying a closed ff object gives the last readonly status.
logical scalar
Jens Oehlschlägel
x <- ff(1:12) is.readonly(x) close(x) open(x, readonly=TRUE) is.readonly(x) close(x) is.readonly(x) rm(x)
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