rescue a Attempting-to-modify exception : freeze « String « Ruby






  1. Ruby
  2. String
  3. freeze

rescue a Attempting-to-modify exception

str = "This is a test. "
str.freeze

begin
  str << " Don't be alarmed."   # Attempting to modify
rescue => err
  puts "#{err.class} #{err}"
end

# Output:
#   TypeError: can't modify frozen string








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