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# File 'lib/active_model/attribute_set/builder.rb', line 41
def fetch_value(name, &block)
if attr = @attributes[name]
return attr.value(&block)
end
@casted_values.fetch(name) do
value_present = true
value = values.fetch(name) { value_present = false }
if value_present
type = additional_types.fetch(name, types[name])
@casted_values[name] = type.deserialize(value)
else
attr = default_attribute(name, value_present, value)
attr.value(&block)
end
end
end
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