Sha256: 77449a2f716f45896639bd131ca873d55c46b97f5f6f5f76219f56fdc937c281
Contents?: true
Size: 780 Bytes
Versions: 10
Compression:
Stored size: 780 Bytes
Contents
require 'facets/core/hash/having_fallback'
class Hash
# Define a fallback object for #fetch and #[].
#
# f = Hash[:b=>2]
# h = Hash[:a=>1].having_aquisition(f)
# h[:b] => 2
def with_aquisition(fallback)
@fallback = fallback
unless @fallsback
def self.[](key)
begin
return @fallback[key] if @fallback and not key?(key)
rescue
end
val = super
val.fallback(self) if Hash == val
val
end
def self.fetch(key, *args, &blk)
begin
return @fallback.fetch(key, *args, &blk) if @fallback and not key?(key)
rescue
end
val = super
val.fallback(self) if Hash == val
val
end
@fallsback = true
end
self
end
end
Version data entries
10 entries across 10 versions & 1 rubygems