Sha256: 5b89fb582bb9c6f7ad94ec4dcc85daafd90f6207c10adc20aa0a0fd0ddc0aa5b
Contents?: true
Size: 509 Bytes
Versions: 31
Compression:
Stored size: 509 Bytes
Contents
# A very simple cache. Works just like a Hash, but can optionally store values
# during the fetch process.
#
# Example:
# hc = HashCache.new
# hc.fetch("foo")
# => nil
# hc.fetch("foo"){:bar} # Block gets called because 'foo' is nil
# => :bar
# hc.fetch("foo"){raise "Block won't be called because 'foo' is cached"}
# => :bar
class HashCache < Hash
def fetch(key, &block)
if has_key?(key)
self[key]
elsif block
self[key] = block.call
else
nil
end
end
end
Version data entries
31 entries across 31 versions & 2 rubygems