pryr: assign-active – R documentation

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assign-active

Create an active binding.

Description

Infix form of makeActiveBinding which creates an active binding between a name and an expression: every time the name is accessed the expression is recomputed.

Usage

x %<a-% value

Arguments

`x`	unquoted expression naming variable to create
`value`	unquoted expression to evaluate every time `name` is accessed

Examples

x %<a-% runif(1)
x
x
x %<a-% runif(10)
x
x
rm(x)

pryr

Tools for Computing on the Language

v0.1.4

GPL-2

Authors

Hadley Wickham [aut, cre], R Core team [ctb] (Some code extracted from base R)

Initial release