VFP (version 1.4.1)

conditionHandler: Condition-Handling Without Losing Information.

Description

Function is intented to wrap expressions provided and catching all potentially useful information generated by the wrapped expression, i.e. errors, warnings, and messages.

Usage

conditionHandler(expr, file = NULL)

Value

(list) with element "result", "status" (0 = no warnings, no errors), 1 = warnings were caught, 2 = errors were caught no result generated, "warnings", "errors", "messages"

Arguments

expr

(expression) for which exception handling should be provided

file

(character) string specifying a file to which all captured output shall be written

Author

Andre Schuetzenmeister

Examples

conditionHandler(warning("This is a warning!"))
f <- function(expr){warning("This a warning!"); eval(expr)}
conditionHandler(f(1/2))
conditionHandler(stop("This is an error!"))
conditionHandler(1/"a")