R Under development (unstable) (2026-01-20 r89309 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2026 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> 
> library(hash)
hash-2.2.6.4 provided by Decision Patterns

> library( testthat )
> 
> h <- hash( letters, 1 )
> 
>   expect_is( h, "hash" )
>   expect_that( length(h), equals(26) )
>   clear(h)
> 
>   expect_that( length(h), equals(0) ) 
> 
> 
> 
> proc.time()
   user  system elapsed 
   1.43    0.17    1.57