Feature #8246: Hash#traverse

• Status: Closed
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -

[zzak (zzak _)]

=begin
From ((<GH-275|URL:https://github.com/ruby/ruby/pull/275>))

Traverses the given levels of a hash and returns the value associated with the
last key provided. Allows for concise access for deeply nested hashes - often encountered with dealing with external restful apis.

(({hash = { level1: { level2: { level3: 3 } } }}))
(({hash.traverse :level1, :level2, :level3 #=> 3}))
Also supports a default value block if the value is nil or the key is
not found.

(({hash.traverse(:level1, :level2, :non_existent_key) { 5 } #=> 5}))
=end

[marcandre (Marc-Andre Lafortune)]

• Assignee set to matz (Yukihiro Matsumoto)
• Priority changed from Normal to 3

Marking as duplicate of #5531.
It's also related to #8237 because one could envision something like:

hash[:level1]??.[:level2]??.[:non_existent_key] || 5

[headius (Charles Nutter)]

As a feature that affects all Ruby implementations, this should probably move to CommonRuby: https://bugs.ruby-lang.org/projects/common-ruby

[zzak (zzak _)]

• Status changed from Open to Closed
• Priority changed from 3 to Normal

Yeah, sorry, this is a duplicate of #5531 with just a different method name