Check for Element
Usage
has(x, ...)
# S3 method for class 'Container'
has(x, elem, ...)
# S3 method for class 'dict.table'
has(x, column, ...)
Value
TRUE
if element is in x
and otherwise FALSE
.
For dict.table
, TRUE
if column exists in x
otherwise FALSE
.
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