# Takes a snake case `self` and converts it to camel case
	#
	# SEE: `to_camel_case`
	fun camel_case do
		if is_upper then return

		var underscore_count = 0

		var pos = 1
		while pos < length do
			var char = self[pos]
			if char == '_' then
				underscore_count += 1
			else if underscore_count > 0 then
				pos -= underscore_count
				remove_at(pos, underscore_count)
				self[pos] = char.to_upper
				underscore_count = 0
			end
			pos += 1
		end
		if underscore_count > 0 then remove_at(pos - underscore_count - 1, underscore_count)
	end