Sha256: 98fb215a2b6ec1be522769fa7e292b0e729d36737a3830e09be23fec245900f4
Contents?: true
Size: 582 Bytes
Versions: 10
Compression:
Stored size: 582 Bytes
Contents
class Hash
# Define a fallback object for #fetch and #[].
#
# f = Hash[:b=>2]
# h = Hash[:a=>1].having_fallback(f)
# h[:b] => 2
def having_fallback(parent=nil)
@fallback = parent
unless @fallsback
def self.[](key)
return @fallback[key] if @fallback and not key?(key) rescue super
super
end
def self.fetch(key, *args, &blk)
return @fallback.fetch(key, *args, &blk) if @fallback and not key?(key) rescue super
super
end
@fallsback = true
end
self
end
attr_accessor :fallback
end
Version data entries
10 entries across 10 versions & 1 rubygems