In R, we can get the size of a hash object using the length function. Here's an example:
library(hash)
# Create a hash object
myhash <- hash(letters, LETTERS)
# Get the size of the hash using the length function
length(myhash)
Output:
[1] 52
In the above example, we created a hash object named myhash using the hash function from the hash package. We passed two vectors, letters and LETTERS, as the keys and values in the hash object.
To get the size of the hash, we simply called the length function on the myhash object and it returned the number of key-value pairs in the hash, which is 52 in this case.