with_sink: Output redirection

In withr: Run Code 'With' Temporarily Modified Global State

Output redirection

Description

Temporarily divert output to a file via sink(). For sinks of type message, an error is raised if such a sink is already active.

Usage

with_output_sink(new, code, append = FALSE, split = FALSE)

local_output_sink(
  new = list(),
  append = FALSE,
  split = FALSE,
  .local_envir = parent.frame()
)

with_message_sink(new, code, append = FALSE)

local_message_sink(new = list(), append = FALSE, .local_envir = parent.frame())

Arguments

new	⁠[character(1)|connection]⁠ A writable connection or a character string naming the file to write to. Passing NULL will throw an error.
code	[any] Code to execute in the temporary environment
append	logical. If TRUE, output will be appended to file; otherwise, it will overwrite the contents of file.
split	logical: if TRUE, output will be sent to the new sink and to the current output stream, like the Unix program tee.
.local_envir	⁠[environment]⁠ The environment to use for scoping.

Value

[any]
The results of the evaluation of the code argument.

See Also

withr for examples

sink()

withr documentation built on Oct. 28, 2024, 5:07 p.m.