Class: Digest::SHA2 (Ruby 1.9.3)# File digest/sha2/lib/sha2.rb, line 26 def initialize(bitlen = 256) case bitlen when 256 @sha2 = Digest::SHA256.new when 384 @sha2 = Digest::SHA384.new when 512 @sha2 = Digest::SHA512.new else raise ArgumentError, "unsupported bit length: %s" % bitlen.inspect end @bitlen = bitlen end
Java 7 Preview
NIO.2を使って簡単ファイル操作
Java 7 - short intro to NIO.2
Java7 New Features and Code Examples
