From: Chris Dempsey <cdallas@...>
Date: 2009-09-30T00:55:40+09:00
Subject: YAML & String Interpolation

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I'm trying to read in a YAML string stored in a configuration file and have
Ruby perform String interpolation on it.

For example,
=== YAML file ===
remote_machine: "${server}:${port}"

=== RUBY ===

def load_settings
    @options = {}
    imports = YAML.load_file('server-info.yaml')
    if imports
        imports.each_pair do |key, value|
            if not key.is_a? Symbol
                imports[key.to_sym] = value
                imports.delete(key)
            end
        end
        @options = imports.merge(@options)
    end
end

server = '192.168.0.1'
port = '8080'
print @options[:remote_machine] # => 192.168.0.1:8080

Instead what I'm getting is the printing of ${server}:${port}.

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