Actions
Feature #13290
closedA method to use a hash like in a case construction
Status:
Feedback
Assignee:
-
Target version:
-
Description
We often want to translate a hash into a case construction and back. For example, suppose we have a case construction like this:
case key
when /foo/ then "FOO"
when /bar/ then "BAR"
else "DEFAULT"
end
Given that the keys are ordered within a hash since Ruby 1.9, the information used in the case construction above can be expressed as a hash h
:
h = {
/foo/ => "FOO"
/bar/ => "BAR"
...
}
h.default = "DEFAULT"
At the moment, there is no straightforward way to translate the hash h
into the case construction as above. I would like to have a method on Hash
that takes a key and works like a case construction (i.e., applies the ===
method) as below:
h.fetch_as_in_case_construction("barbar") # => "BAR"
The name fetch_as_in_case_construction
is terrible. Perhaps someone can suggest a better name.
Actions
Like0
Like0Like0Like0Like0Like0