Safely evaluate an expression with warning on error

Usage

safe_wrapper(expr, msg_fmt, default = NULL)

Arguments

expr

Expression to evaluate.

msg_fmt

A format string passed to `sprintf`. The caught error message will be inserted via `

defaultValue to return if evaluation fails. Defaults to `NULL`.

The result of `expr`, or `default` on error. Evaluates `expr` and returns its result. If an error occurs, a formatted warning is issued and `default` is returned. internal