R: Isolate a Function from its Environment

crate {mlr3misc} | R Documentation

## Isolate a Function from its Environment

### Description

Put a function in a "lean" environment that does not carry unnecessary baggage with it (e.g. references to datasets).

### Usage

    crate(.fn, ..., .parent = .GlobalEnv)

### Arguments

`.fn` | (`function()`) function to crate
`...` | (any) The objects, which should be visible inside `.fn`.
`.parent` | (`environment`) Parent environment to look up names. Default so the global environment.

### Examples

    meta_f = function(z) {
      x = 1
      y = 2
      crate(function() {
        c(x, y, z)
      }, x)
    }
    x = 100
    y = 200
    z = 300
    f = meta_f(1)
    f()

[Package mlr3misc version 0.10.0 Index]