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What happens if you try to access a key that doesn’t exist, though?
In many languages, you’ll get an error of some kind. Not so in Ruby: you’ll instead get the special value nil
.
Along with false
, nil
is one of two non-true
values in Ruby. (Every other object is regarded as “truthy,” meaning that if you were to type if 2
or if "bacon"
, the code in that if
statement would be run.)
It’s important to realize that false
and nil
are not the same thing: false
means “not true,” while nil
is Ruby’s way of saying “nothing at all.”
Instructions
1.
Go ahead and try to access a key in creatures
that doesn’t exist.
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