Description Usage Arguments Details Value Author(s) See Also Examples
Get readonly status of an ff object
1 2 3 | is.readonly(x, ...)
## S3 method for class 'ff'
is.readonly(x, ...)
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x |
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... |
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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 Oehlschl<c3><a4>gel
1 2 3 4 5 6 7 8 | 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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