eval_: [!] Parse and evaluate expression in a string

In GegznaV/spMisc: Infix Operators, Convenience and Other Kind of Miscellaneous Functions

Description

A wrapper function to parse a string and evaluate it as an expression. eval_(X) is a wrapper for eval(parse(text = X)).

Usage

eval_(X, envir = parent.frame(), ...)

Arguments

X	A string to be evaluated as an expression.
envir	the environment in which expr is to be evaluated. May also be NULL, a list, a data frame, a pairlist or an integer as specified to sys.call.
...	Further parameters to be passed to eval.

Value

Evaluated expression

See Also

Evaluate an (unevaluated) expression (eval), Parse expressions (parse)

Examples

if (any(ls() == "A")) rm(A)
any(ls() == "A")
#> [1] FALSE

eval_("A <- 3")
any(ls() == "A")
#> TRUE

GegznaV/spMisc documentation built on April 26, 2020, 5:59 p.m.