Assert if condition is true

Throw error if condition false

Usage

assert(cond, msg = "Assertion failed.", A = NULL)

Arguments

cond

Logical test

msg

Error message to be displayed if cond == FALSE

A

values to format msg if the latter contains C-style formatting commands. formatted as parsable

Value

The error message if cond == FALSE, nothing otherwise

Author

Waldir Leoncio

Examples

minVal <- 7
x <- 26
assert(minVal < x) # should return nothing
maxVal <- 13
if (FALSE) {
  assert((minVal < x) && (x < maxVal))
  assert(x == "a", "x is %s", class(x))
}