紅寶石印刷書寫線

Question

我試圖截斷並寫入新的生產線，以一個文件的內容並打印後的空白：

target = File.open(ARGV.first, 'w') 

puts "we are going to clear the file first" 

target.truncate(0) 

puts "give me 1 line" 
line1 = $stdin.gets.chomp 
puts "give me another line!" 
line2 = $stdin.gets.chomp 

puts "we are gonna write the text into the file now" 
target.write(line1) 
target.write("\n") 
target.write(line2) 
target.write("\n") 

newfile = open(ARGV.first, 'r') 
puts newfile.read 

puts "we will close the file now" 
target.close 

然而，紅寶石保持印刷空白。我寫的文本文件有我輸入的文本。我不確定發生了什麼事。

Answer 1

您需要先關閉文件，然後再嘗試讀取文件。

target = File.open(ARGV.first, 'w') 

puts "we are going to clear the file first" 

target.truncate(0) 

puts "give me 1 line" 
line1 = $stdin.gets.chomp 
puts "give me another line!" 
line2 = $stdin.gets.chomp 

puts "we are gonna write the text into the file now" 
target.write(line1) 
target.write("\n") 
target.write(line2) 
target.write("\n") 

puts "we will close the file now" 
target.close 

newfile = open(ARGV.first, 'r') 
puts newfile.read