We can pass a
key to a hash
and
we can ask the hash
to return the value
for the given key.
Here, we have a hash
where we have the country
name as the key
and
the capital of the country
as the value:
| Key | Value |
|---|
| USA | Washington D.C. |
| England | London |
| France | Paris |
Let's ask the hash to
print the name of the capital
city for USA.
Next, let's do
the same thing, but
change the key.
We want to know what's
the capital city of
the country "France":