解析 ERB

此示例是來自 IRB 會話的過濾文字。

=> require 'erb'
=> input = <<-HEREDOC
<ul>
<% (0..10).each do |i| %>
    <%# This is a comment %>
    <li><%= i %> is <%= i.even? ? 'even' : 'odd' %>.</li>
<% end %>
</ul>
HEREDOC

=> parser = ERB.new(input)
=> output = parser.result
=> print output
<ul>

    <li>0 is even.</li>

    <li>1 is odd.</li>

    <li>2 is even.</li>

    <li>3 is odd.</li>

    <li>4 is even.</li>

    <li>5 is odd.</li>

    <li>6 is even.</li>

    <li>7 is odd.</li>

    <li>8 is even.</li>

    <li>9 is odd.</li>

    <li>10 is even.</li>

</ul>