I/O Excerises

io exercise

require 'rubygems'
require 'rest-client'


fname = "sample.txt"
somefile = File.open(fname, "w")
somefile.puts "Hello file!"
somefile.close



wiki_url = "http://en.wikipedia.org/"
wiki_local_filename = "wiki-page.html"

File.open(wiki_local_filename, "w") {|file| file.write (RestClient.get(wiki_url))}


file = File.open("sample.txt", "r")
contents = file.read
puts contents  


File.open("sample.txt").readlines.each do |line|
   puts line
end



file = File.open("sample.txt", 'r')
while !file.eof?
   line = file.readline
   puts line
end


require 'open-uri'
url = "http://ruby.bastardsbook.com/files/fundamentals/hamlet.txt"
puts open(url).readline


require 'open-uri'         
url = "http://ruby.bastardsbook.com/files/fundamentals/hamlet.txt"
local_fname = "hamlet.txt"
File.open(local_fname, "w"){|file| file.write(open(url).read)}

File.open(local_fname, "r") do |file|
   file.readlines.each_with_index do |line, idx|
      puts line if idx % 42 == 41
   end   
end




datafile = File.open("sample.txt", "r")
lines = datafile.readlines         
datafile.close

lines.each{ |line| puts line }


lines = File.open("sample.txt", "r"){ |datafile| 
   datafile.readlines
}

lines.each{|line| puts line}