Check for Element

Check for Element

has(x, ...)

# S3 method for Container
has(x, elem, ...)

# S3 method for dict.table
has(x, column, ...)

Arguments

x

any R object.

...

additional arguments to be passed to or from methods.

elem

some element to be found.

column

vector of values with the same length as the number of rows of the dict.table.

Value

TRUE if element is in x and otherwise FALSE.

For dict.table, TRUE if column exists in x otherwise FALSE.

See also

has_name()

Examples

co = container(1, 2, mean)
has(co, 1)                   # TRUE
#> [1] TRUE
has(co, mean)                # TRUE
#> [1] TRUE
has(co, 1:2)                 # FALSE
#> [1] FALSE

dit = dict.table(a = 1:3, b = as.list(4:6))
has(dit, 1:3)            # TRUE
#> [1] TRUE
has(dit, 4:6)            # FALSE
#> [1] FALSE
has(dit, as.list(4:6))   # TRUE
#> [1] TRUE