Convenience functions and operators for operating on bitflags and enums
1 2 3 4 5 6 7 8 9 10 11
as.flag(x) ## S3 method for class 'flags' x[value] ## S3 method for class 'flag' x | y ## S3 method for class 'flag' x & y ## S3 method for class 'flag' !x ## S3 method for class 'enum' x == y
Numeric value to coerce to a
Right hand operand
The character id or index for a particular flag in a
The libraries bound by RGtk2 often return numeric values that are either bitflags or enumerations. In order to facilitate operations on these types (especially bitflags), several methods have been defined corresponding to conventional operators for performing bitwise operations and comparisons.
RGtk2 defines all of the enum and flag types from the API's as vectors of class
enums with their names corresponding to the
nicknames of the values. The
[ operator on the
retrieves a value as a
flag. This only necessary for the bitwise ops and
thus is not necessary for enums.
==.enum method compares a
enum with either a
character or numeric representation of an enum value.
[.flags, and the bitwise operators.
A logical value for
Sometimes the API does not return a value specifically as a
In this case, it is a generic numeric value and should be coerced with
Want to suggest features or report bugs for rdrr.io? Use the GitHub issue tracker.