Ruby学習#26 Reading Files

employees.txt
Jim, Sales
Andy, Sales
Kelly, Customer Service
Creed, Quality Assurance
Michaes, Manager

File.open("employees.txt","r") do |file|

puts file.read()

end

Jim, Sales
Andy, Sales
Kelly, Customer Service
Creed, Quality Assurance
Michaes, Manager

puts file.read().include? "Jim"

true

puts file.readline()

Jim,sales

puts file.readline()
puts file.readline()

Jim,Sales
Andy,Sales

puts file.readchar()
puts file.readchar()
puts file.readchar()

J
i
m

puts file.readlines()

Jim, Sales
Andy, Sales
Kelly, Customer Service
Creed, Quality Assurance
Michaes, Manager

puts file.readlines()[2]

Kelly, Customer Service

for line in file.readlines()
puts line
end

Jim, Sales
Andy, Sales
Kelly, Customer Service
Creed, Quality Assurance
Michaes, Manager

file = File.open("employees.txt","r")

puts file.read

file.close()

Jim, Sales
Andy, Sales
Kelly, Customer Service
Creed, Quality Assurance
Michaes, Manager