Safely eval a string as an expression

Source: R/safe-eval.R

Safely eval a string as an expression

safe_eval(
  x,
  vars = NULL,
  replace_comma = TRUE,
  insert_products = TRUE,
  allowed_functions = getGroupMembers("Math")
)

Arguments

x

string to evaluate
vars

list with variable values
replace_comma

Replace ',' with '.' before parsing
insert_products

Make implicit products explicit
allowed_functions

functions (sequence of characters) that should not have products, e.g. cos, sin

Examples

safe_eval("2+2")
#> [1] 4