Internal class for formatting the data for a column.
pillar_shaft() is a coercion method that must be implemented
for your data type to display it in a tibble.
This class comes with a default method for print() that calls format().
If print() is called without width argument, the natural width will be
used when calling format().
Usually there's no need to implement this method for your subclass.
Your subclass must implement format(), the default implementation just
raises an error.
Your format() method can assume a valid value for the width argument.
pillar_shaft(x, ...)# S3 method for pillar_shaft
print(x, width = NULL, ...)
# S3 method for pillar_shaft
format(x, width, ...)
# S3 method for logical
pillar_shaft(x, ...)
# S3 method for numeric
pillar_shaft(x, ..., sigfig = 3)
# S3 method for Date
pillar_shaft(x, ...)
# S3 method for POSIXt
pillar_shaft(x, ...)
# S3 method for character
pillar_shaft(x, ...)
# S3 method for list
pillar_shaft(x, ...)
# S3 method for AsIs
pillar_shaft(x, ...)
# S3 method for default
pillar_shaft(x, ...)
A vector to format
Unused, for extensibility.
Width for printing and formatting.
Minimum number of significant figures to display. Numbers larger than 1 will potentially show more signficiant figures than this but they will be greyed out.
The default method will currently coerce via as.character(),
but you should not rely on this behavior.