Flowdock
class
Importance_1
v1_9_3_392 - Show latest stable - 0 notes - Superclass: IndexError

Raised when the specified key is not found. It is a subclass of IndexError.

h = {"foo" => :bar}
h.fetch("foo") #=> :bar
h.fetch("baz") #=> KeyError: key not found: "baz"
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