Class for ``no quote'' Printing of Strings

Usage

noquote(obj)
print.noquote(obj, ...)
obj[j]

Arguments

obj any R object; typically a vector of character strings.
... further options for print.

Description

These functions exist both as utilities and as an example of using class and object orientation.

Value

noquote returns its argument as an object of class "noquote". The function "[.noquote" ensures that the class is not lost by subsetting.

For (default) printing, print.noquote will be used which prints characters without quotes ("...").

Author(s)

Martin Maechler maechler@stat.math.ethz.ch

See Also

methods,class,print.

Examples

letters
nql <- noquote(letters)
nql
nql[1:4] <- "oh"
nql[1:12]

cmp.logical <- function(log.v)
{
  ## Purpose: compact printing of logicals
  log.v <- as.logical(log.v)
  noquote(if(length(log.v)==0)"()" else c(".","|")[1+log.v])
}
cmp.logical(runif(20) > 0.8)

[Package Contents]