File.open and blocks in Ruby 1.8.7

瘦欲@ 提交于 2019-12-05 08:17:09
Victor Deryagin

In order to close file after block, you should pass block to File.open() directly, not to each:

File.open('somefile.txt', 'r') do |f| 
  f.each_line { |l| puts l }
end

File.open(…).each {…} is just iterating over opened file without closing it.

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