r2r (version 0.1.1)

on_missing_key: On missing key behaviour

Description

These generics are used to get or set the behaviour of an hashmap upon query of a missing key (currently, only an hashmap method is implemented).

Usage

on_missing_key(x)
on_missing_key(x) <- value
# S3 method for r2r_hashmap
on_missing_key(x)
# S3 method for r2r_hashmap
on_missing_key(x) <- value

Arguments

x

an hashmap.

value

a string, either "throw" or "default". Action to be taken upon query of a missing key.

Value

a string, either "throw" or "default".

Details

For more details, see the hashtable documentation page.

Examples

# NOT RUN {
m <- hashmap()
on_missing_key(m)
on_missing_key(m) <- "throw"
# }