| withVisible {base} | R Documentation |
Return both a value and its visibility
Description
This function evaluates an expression, returning it in a two element list
containing its value and a flag showing whether it would automatically print.
Usage
withVisible(x)
Arguments
x |
An expression to be evaluated. |
Details
The argument is evaluated in the caller's context.
Value
value |
The value of x after evaluation. |
visible |
logical; whether the value would auto-print. |
See Also
invisible, eval
Examples
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)
[Package
base version 2.9.0
Index]