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@hannestyden
Created August 5, 2014 16:05
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module DeepCompact
def self.blank?(o)
o.nil? || (o.respond_to?(:empty?) && o.empty?)
end
module Array
def deep_compact
map.with_object(self.class.new) { |e, o|
o << (e.respond_to?(:deep_compact) ? e.deep_compact : e)
}.select { |value| !DeepCompact.blank?(value) }
end
end
module Hash
def deep_compact
map.with_object(self.class.new) { |(k, v), o|
o[k] = v.respond_to?(:deep_compact) ? v.deep_compact : v
}.select { |_, v| !DeepCompact.blank?(v) }
end
end
end
class Array
include DeepCompact::Array
end
class Hash
include DeepCompact::Hash
end
{a: {b: nil}}.deep_compact # => {}
{a: {b: {c: 1, d: nil}}}.deep_compact # => {:a=>{:b=>{:c=>1}}}
{a: {b: {c: 1, d: [{e: []}]}}}.deep_compact # => {:a=>{:b=>{:c=>1}}}
{a: {b: {c: 1, d: [{e: []}, {f: ""}, 1, nil, {}]}}}.deep_compact # => {:a=>{:b=>{:c=>1, :d=>[1]}}}
@toto
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toto commented Dec 12, 2014

Googling deep_compact I found this. Kudos Google.

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