R: Create or populate an environment with parametrized active...

create_env {bindr} | R Documentation

## Create or populate an environment with parametrized active bindings

### Description

Leverages makeActiveBinding() by allowing parametrized functions that take the name of the binding and an arbitrary number of additional arguments.

### Usage

    create_env(names, fun, ..., .envir = parent.frame(),
      .enclos = parent.frame())

    populate_env(env, names, fun, ..., .envir = parent.frame())

### Arguments

`names` | A name, or a list of names, or a character vector; in the latter case the names are mangled if they are not representable in the native encoding
`fun` | A function with at least one argument, which will be called to compute the value of a binding. The function will be called with the binding name as first argument (unnamed), and `...` as additional arguments
`...` | Additional arguments to `fun`
`.envir` | The environment in which `fun` will be executed, important if `fun` calls other functions that are not globally visible
`.enclos` | The enclosing environment (`parent.env`) for the newly created environment
`env` | An environment

### Examples

    env <- create_env(letters, paste0, "-lowercase")
    env$a
    env$c
    env$Z
    populate_env(env, LETTERS, paste0, "-uppercase")
    env$a
    env$Z

[Package bindr version 0.1.1 Index]