Filter a List by Class

Filters a list, keeping or excluding elements based on their class.

Usage

cfilter(x, classes, not = FALSE)

Arguments

x

A list of R objects.

classes

A character string specifying the class to filter by.

not

Logical; if `TRUE`, elements *not* inheriting from `class` are kept. Default is `FALSE`.

Value

A list containing the elements of `x` that (do not) inherit from the specified class.

Examples

lst <- list(1L, "text", 3.14, list(a = 1))
cfilter(lst, "numeric")  # returns elements that are numeric
#> Error in FUN(X[[i]], ...): 'what' must be a character vector or an object with a nameOfClass() method
cfilter(lst, "character")  # returns character elements
#> Error in FUN(X[[i]], ...): 'what' must be a character vector or an object with a nameOfClass() method
cfilter(lst, "numeric", not = TRUE)  # returns elements that are NOT numeric
#> Error in FUN(X[[i]], ...): 'what' must be a character vector or an object with a nameOfClass() method