Test if an object is a dockerfile

Checks whether the provided object is a valid dockerfile class object.

Usage

is_dockerfile(x)

Arguments

x

Object to test

Value

TRUE if x is a dockerfile object, FALSE otherwise

See also

dockerfile() for creating a dockerfile object & check_dockerfile() for ensuring an object is a dockerfile (with error)

Other dockerfile core functions: add_dockerfile_line(), check_dockerfile(), dockerfile(), print.dockerfile()

Examples

df <- dockerfile()
is_dockerfile(df)
#> [1] TRUE
is_dockerfile(list())
#> [1] FALSE