[英]How do I search a text file for a string and then print/return/put out what line of the file it was found on as a number in Ruby
因此,我想使用从中得到的数字:
line = answer to question
database.read.lines[line]
数据库是我正在搜索的文本文件。
您也可以这样操作:
text_to_find = 'some random text' # use gets method to take input from user
text_found_at_index = database.readlines.index{|line| not line[text].nil? }
希望这是您所需要的:)
我会尝试这样的事情:
query = gets.chomp
database.each_line.with_index do |line, index|
if line.include?(query)
puts "Line #{index}: #{line}"
end
end
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