str.split(//).each {|e|print (e.unpack('H*').to_s + "\n")}
#irb
# 52
# 75
# 62
# 79
# =>["R", "u", "b", "y"]
计算文件大小的不会，给你看看行数计算吧Ruby文件行数计算代码示例：
module Enumerable
# function to get total lines for file
def total_lines
lines = 0
each_with_index {|content,lines|}
return lines+1
end
end
class CheckLines
require 'find'
@check_type = %w{txt rb erb yml html css xml}
def initialize(directory)
@total_lines = 0
if File.directory?(directory)
@directorydirectory = directory
@contents = {}
self.go
else puts "#{directory} is not a directory! check it out!" and return
end
end
def go
if @directory
Find.find @directory do |path|
pathpathlite = path.gsub(@directory,'')
if File.file? path
File.open path do |f|
tmp_line = f.total_lines
@contents.store(pathlite,tmp_line)
@total_lines += tmp_line
end
end
end
puts @total_lines
end
end
def details
@contents.each do |key,value|
puts "#{key} file has lines of #{value}"
end
end
end
