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Asked: 2026-05-25T02:12:20+00:00

I have the following string: /Users/patelc75/Documents/code/haloror/dialup/H200000787_1313406125/H200000787_1313389058_1.xml In Ruby, how do I extract the first

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I have the following string: 

/Users/patelc75/Documents/code/haloror/dialup/H200000787_1313406125/H200000787_1313389058_1.xml

In Ruby, how do I extract the first 10 character substring that starts with the letter H and contains 9 digits (digits only) after the H. In this above example, the substring would be H200000787

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1 Answer

  1. Editorial Team

    String#[] method is what you need:

    str = '/Users/patelc75/Documents/code/haloror/dialup/H200000787_1313406125/H200000787_1313389058_1.xml'

puts str[/H\d{9}/]     #=> H200000787
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