uruby to lower case
name = 'Foo'
puts name # Ruby
puts name.downcase # ruby
puts name.upcase # RUBY
puts name # Ruby
uruby to lower case
name = 'Foo'
puts name # Ruby
puts name.downcase # ruby
puts name.upcase # RUBY
puts name # Ruby
upcase first letters in ruby
“mICHAel”.capitalize
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