Question

That may be a shitty title. If anyone has a better idea for how to describe this question, happy to hear it.

If I’m building an XML document with ElementTree in Python, I can do something along the lines of

tag = ET.SubElement(root, 'tag')
tag.set('foo', 'true')
if bar
  tag.set('baz', 'false')

But with Builder in Ruby, The only way I can see how to set tag attributes is to do the following:

xml.tag :foo => 'true', :baz => 'false'

Is there a way for me to assign baz later after that point? Or do I have to rewrite the entire thing like so:

if bar
  xml.tag :foo => 'true', :baz => 'false'
else
  xml.tag :foo => 'true', :baz => 'true'
end

Answer 1

Code is more clear when you don’t update in-place. Why not this?

xml.tag :foo => 'true', :baz => (bar ? 'true' : 'false')