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vfunc: Manipulate Virtual Functions

If f <- function(x){x^2} and g <- function(x){x+1} it is a constant source of annoyance that "f+g" is not defined. Package 'vfunc' allows you to do this, and we have (f+g)(2) returning 5. The other arithmetic operators are similarly implemented. A wide class of coding bugs is eliminated.

Version: 1.0
Depends: R (≥ 4.2.0)
Imports: methods
Suggests: testthat, knitr, rmarkdown, onion
Published: 2025-07-28
DOI: 10.32614/CRAN.package.vfunc
Author: Robin K. S. Hankin ORCID iD [aut, cre]
Maintainer: Robin K. S. Hankin <hankin.robin at gmail.com>
License: GPL-2
NeedsCompilation: no
Materials: README
CRAN checks: vfunc results

Documentation:

Reference manual: vfunc.html , vfunc.pdf
Vignettes: The vfunc package (source, R code)

Downloads:

Package source: vfunc_1.0.tar.gz
Windows binaries: r-devel: vfunc_1.0.zip, r-release: vfunc_1.0.zip, r-oldrel: vfunc_1.0.zip
macOS binaries: r-release (arm64): vfunc_1.0.tgz, r-oldrel (arm64): vfunc_1.0.tgz, r-release (x86_64): vfunc_1.0.tgz, r-oldrel (x86_64): vfunc_1.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=vfunc to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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