Return the values of `x`

that are `%in%`

of the vector `y`

.

`what_in(x, y, ignore.case = FALSE)`

## Arguments

- x
A vector to check.

- y
A vector to compare against.

- ignore.case
logical; if `FALSE`

, the pattern matching is case
sensitive and if `TRUE`

, case is ignored during matching.

## Value

The elements of `x`

that are `%in%`

y.

## Details

`x[which(x %in% y)]`

## See also

Other counting wrappers:
`count_diff()`

,
`count_in()`

,
`count_na()`

,
`count_out()`

,
`na_in()`

,
`na_out()`

,
`na_rep()`

,
`prop_distinct()`

,
`prop_in()`

,
`prop_na()`

,
`prop_out()`

,
`what_out()`

## Examples

```
what_in(c("VT", "DC", NA), state.abb)
#> [1] "VT"
```