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instance method

Symbol#to_s

() -> ::String

to_s → string

# File tmp/rubies/ruby-4.1.0-preview1/symbol.rb, line 11
def to_s
  Primitive.attr! :leaf
  Primitive.cexpr! 'rb_sym2str(self)'
end

Returns a frozen string representation of self (not including the leading colon):

Example

:foo.to_s # => "foo"
:foo.name.frozen? # => true

Ruby version changes

4.1
- Symbol#to_s now returns a frozen string. [Feature #22137]
3.4
- The string returned by Symbol#to_s now emits a deprecation warning when mutated, and will be frozen in a future version of Ruby. These warnings can be enabled with -W:deprecated or by setting Warning[:deprecated] = true. [Feature #20350]

See also #to_proc #to_sym #swapcase #upcase also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0