module ActiveSupport::Inflector

camelize(underscore('SSLError')) # => "SslError"

#underscore, though there are cases where that does not hold:
As a rule of thumb you can think of +camelize+ as the inverse of

camelize('active_model/errors', false) # => "activeModel::Errors"
camelize('active_model/errors') # => "ActiveModel::Errors"
camelize('active_model', false) # => "activeModel"
camelize('active_model') # => "ActiveModel"

paths to namespaces.
Also converts '/' to '::' which is useful for converting

lowerCamelCase.
If the +uppercase_first_letter+ parameter is set to false, then produces
Converts strings to UpperCamelCase.

def camelize(term, uppercase_first_letter = true)
  string = term.to_s
  if uppercase_first_letter
    string = string.sub(/^[a-z\d]*/) { |match| inflections.acronyms[match] || match.capitalize }
  else
    string = string.sub(inflections.acronyms_camelize_regex) { |match| match.downcase }
  end
  string.gsub!(/(?:_|(\/))([a-z\d]*)/i) { "#{$1}#{inflections.acronyms[$2] || $2.capitalize}" }
  string.gsub!("/", "::")
  string
end