withVisible

0th

Percentile

Return both a value and its visibility

This function evaluates an expression, returning it in a two element list containing its value and a flag showing whether it would automatically print.

Keywords
programming
Usage
withVisible(x)
Arguments
x
An expression to be evaluated.
Details

The argument is evaluated in the caller's context.

This is a primitive function.

Value

value
The value of x after evaluation.
visible
logical; whether the value would auto-print.

See Also

invisible, eval

Aliases
  • withVisible
Examples
library(base) x <- 1 withVisible(x <- 1) x withVisible(x) # Wrap the call in evalq() for special handling df <- data.frame(a = 1:5, b = 1:5) evalq(withVisible(a + b), envir = df)
Documentation reproduced from package base, version 3.3.0, License: Part of R 3.3.0

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