| Title: | Make Binary Operators |
| Version: | 1.0.0 |
| Date: | 2017-04-01 |
| Description: | Turn arbitrary functions into binary operators. |
| License: | GPL (≥ 3) |
| Depends: | R (≥ 3.0.0) |
| Imports: | magrittr |
| Suggests: | knitr, rmarkdown, testthat |
| VignetteBuilder: | knitr |
| URL: | https://github.com/wlandau/grapes |
| BugReports: | https://github.com/wlandau/grapes/issues |
| Encoding: | UTF-8 |
| RoxygenNote: | 5.0.1 |
| NeedsCompilation: | no |
| Packaged: | 2017-04-01 16:14:19 UTC; landau |
| Author: | William Michael Landau [aut, cre, cph] |
| Maintainer: | William Michael Landau <will.landau@gmail.com> |
| Repository: | CRAN |
| Date/Publication: | 2017-04-01 16:22:11 UTC |
Function bunch
Description
List the available operators in a package or environment. The environment defaults to your workspace.
Usage
bunch(from = parent.frame())
Arguments
from |
package (character scalar) or environment to look for operators |
Value
character vector of all the available operators in an environemnt
Examples
grow(rbind, from = "base")
bunch() # has "%rbind%"
myfun = function(x, y) x + y
env = new.env()
grow(myfun, to = env)
bunch() # has "%rbind%"
bunch(from = env) # "%myfun%"
Function functions
Description
List the available functions in a package or environment that are not already binary ooperators.
Usage
functions(from = parent.frame())
Arguments
from |
package (character scalar) or environment to look for functions |
Value
character vector of the names of available functions
in from
Examples
functions()
myfun = function(x, y) x + y
functions()
functions("grapes")
functions("knitr")
Function grow
Description
Turn a collection of functions into binary operators. For
example, create the binary operator %cbind% from the function
cbind() by calling grow(cbind). Then,
you can call sleep %cbind% sleep %cbind% sleep to add
to the columns of a data frame while avoiding cumbersome parentheses.
Usage
grow(..., list = character(0), from = parent.frame(), to = parent.frame())
Arguments
... |
characters or symbols, names of functions to make into binary operators. |
list |
character vector of names of functions to make into binary operators |
from |
package (character scalar) or environment to look for functions to turn into binary operators. |
to |
environment to store the new binary operators. |
Examples
grow(rbind, from = "base") # Use `from` to specify a package or environment to search.
nrow(sleep) # 20
longer = sleep %rbind% sleep %rbind% sleep # No clumsy parentheses!
nrow(longer) # 60. Most of us would like to sleep longer.