Markdown Heading Parser from Scratch in Ruby

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Summary

Parse a Ruby Heredoc and replace any lines that start with a hashtag with HTML H1 heading tags.

Exercise File

Code File

Exercise Description

Given a Ruby Heredoc string, replace any lines that start with a hashtag and wrap them in HTML H1 heading tags.

Sample Input

content = <<-EOF
# Hey there
Some content
# Another heading
More content
EOF

Expected Output

"<h1>Hey there</h1>\n\nSome content\n\n<h1>Another heading</h1>\n\nMore content\n"

Real World Usage

When it comes to working with Rails helper methods, it's important to understand how to parse large strings and replace patterns with other strings.

Solution

Can be found on the solutions branch on github.