Ruby on Rails uncapitalize first letter

Question

I\'m running Rails 2.3.2.

How do I convert \"Cool\" to \"cool\"? I know \"Cool\".downcase works, but is there a Ruby/Rails method

Answer 1

You can use tap (so that it fits on one line):

"JonSkeet".tap { |e| e[0] = e[0].downcase } # => "jonSkeet"

Answer 2

str = "Directly to the south"
str[0] = str[0].downcase
puts str
#=> "directly to the south"

Answer 3

name = "Viru"

name = name.slice(0).downcase + name[1..(name.length)]

Answer 4

Try this

'Cool'.sub(/^([A-Z])/) { $1.tr!('[A-Z]', '[a-z]') }

https://apidock.com/ruby/XSD/CodeGen/GenSupport/uncapitalize

Answer 5

You could also do this with a simple sub:

"Cool".sub(/^[A-Z]/) {|f| f.downcase }

Answer 6

There is no inverse of capitalize, but you can feel free to roll your own:

class String
  def uncapitalize 
    self[0, 1].downcase + self[1..-1]
  end
end