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rubyvariable-assignmentberkeley-dbdbm

Why when using DBM with Ruby, db[1] = 2 is ok, but print db[1] will give error?

On Ruby, when using DBM

require "dbm"

db = DBM.open("somedata")
db[1] = 2   # ok
p db[1]     # gives error

does anyone know db[1] = 2 is ok, but printing out db[1] will give error?

If it requires db["1"] to be valid, then how come it doesn't apply to both cases but to one case only?

Solution

  • dbm convert key and value to string, so :

    p db["1"]

    give

    "2"