suppress: Selectively suppress warnings and messages

In pkgcond: Classed Error and Warning Conditions

Description

This collection of functions allow the suppression of condition messages, warnings and messages, through filtering the condition message, the condition class or a combination of the two.

Usage

suppress_conditions(expr, pattern = NULL, class = NULL, ...)

suppress_warnings(expr, pattern = NULL, class = "warning", ...)

suppress_messages(expr, pattern = NULL, class = "message", ...)

Arguments

expr	An expression to evaluate.
pattern	A regular expression pattern to match on.
class	The class or classes that you would like to filter. When more that one is given the condition may match any of the classes.
...	Arguments passed on to base::grepl x a character vector where matches are sought, or an object which can be coerced by as.character to a character vector. Long vectors are supported. ignore.case if FALSE, the pattern matching is case sensitive and if TRUE, case is ignored during matching. perl logical. Should Perl-compatible regexps be used? fixed logical. If TRUE, pattern is a string to be matched as is. Overrides all conflicting arguments. useBytes logical. If TRUE the matching is done byte-by-byte rather than character-by-character. See ‘Details’.

Functions

• suppress_conditions: The general case of suppressing both messages and warnings.

• suppress_warnings: A convenience wrapper that specifies warning class to suppress.

• suppress_messages: A convenience wrapper that specifies warning class to suppress.

Examples

## Not run: 
testit <- function(){
    warning("this function does nothing.")
    warning("it's pretty useless.")
}
suppress_warning(testit(), "useless")  # Will suppress only the second warning by pattern


# If my_pkg used pkgcond for conditions,
# This would suppress all messages and warnings originating
# in my_pkg functions.
suppress_conditions(my_function(), class='my_pkg-condition')

## End(Not run)

pkgcond documentation built on April 28, 2021, 9:06 a.m.