var_is_a: Test that the value of the expression is of a specific class.

In HJ08003/socraticswirl-RStudioServer: Learn R With Interactive In-class Examples

Description

Returns TRUE if a variable of the given name exists in the global environment and is of the given class.

Usage

var_is_a(class, var_name)

Arguments

class	expected class which the given variable
var_name	name of the variable

Value

TRUE or FALSE

See Also

Other AnswerTests: AnswerTests, any_of_exprs, calculates_same_value, expr_creates_var, expr_identical_to, expr_is_a, expr_uses_func, func_of_newvar_equals, omnitest, val_has_length, val_matches

Examples

## Not run: 
# Test that a variable named "x" in the global environmentis numeric.
var_is_a('numeric', 'x')

## End(Not run)

HJ08003/socraticswirl-RStudioServer documentation built on May 20, 2019, 11:10 a.m.