withStopMessage: Execute an expression and print an error message if it fails

In FastRet: Retention Time Prediction in Liquid Chromatography

Execute an expression and print an error message if it fails

Description

Execute an expression and print an error message if it fails

Usage

withStopMessage(expr)

Arguments

expr	The expression to execute

Value

The result of the expression

Examples

f <- function(expr) {
  val <- try(expr, silent = TRUE)
  err <- if (inherits(val, "try-error")) attr(val, "condition") else NULL
  if (!is.null(err)) value <- NULL
  list(value = val, error = err)
}
ret <- f(log("a")) # this error will not show up in the console
ret <- f(withStopMessage(log("a"))) # this error will show up in the console

FastRet documentation built on June 25, 2024, 5:07 p.m.