stopif: Stops execution

In sigbertklinke/mmstat: Support for the development of interactive Shiny apps

Description

Stops the execution of a Shiny app, if at least cond contains one TRUE. The function uses validate and need from the library shiny.

Usage

stopif(cond, fmt, ...)

Arguments

cond	condition, execution is stopped if any entry is TRUE
fmt	a character vector of format strings for sprintf
...	further values to be passed into fmt. Only logical, integer, real and character vectors are supported.

Examples

## Not run: 
  # Produces an error
  x <- -1
  stopif(x<=0, "x is smaller than %i", 0)

## End(Not run)

sigbertklinke/mmstat documentation built on May 14, 2019, 8:36 a.m.