is.readonly: Get readonly status
In OHDSI/ff: Memory-Efficient Storage of Large Data on Disk and Fast Access Functions
Description
Usage
Arguments
Details
Value
Author(s)
See Also
Examples
Description
Get readonly status of an ff object
Usage
1
2
3
is.readonly(x, ...)
## S3 method for class 'ff'
is.readonly(x, ...)
Arguments
x
x
...
...
Details
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.
Value
logical scalar
Author(s)
Jens Oehlschlägel
See Also
Examples
1
2
3
4
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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)
OHDSI/ff documentation built on May 7, 2019, 8:30 p.m.
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Description Usage Arguments Details Value Author(s) See Also Examples
Description
Get readonly status of an ff object
Usage
1 2 3 | is.readonly(x, ...)
## S3 method for class 'ff'
is.readonly(x, ...)
|
Arguments
x |
|
... |
|
Details
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.
Value
logical scalar
Author(s)
Jens Oehlschlägel
See Also
Examples
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)
|
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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