[Chicken-users] hash-table with missing keys

[Michele Simionato]

This is one thing I always wanted to ask: what's the rationale for

(hash-table-ref h 'non-existing-key)

returning #f instead of an error? In this way I am never sure if I have
found a key associated to a false value or if the key was missing.
I guess there is some backward compatibility reason, otherwise
the only reasonable behavior for

(hash-table-ref h 'non-existing-key)

is to return an error unless I specify a third argument, such as

(hash-table-ref h 'non-existing-key #f)

Am I missing something?

              Michele Simionato