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instance method

Kernel#frozen?

() -> bool

obj.frozen? → true or false

# File tmp/rubies/ruby-4.1.0-preview1/kernel.rb, line 57
def frozen?
  Primitive.attr! :leaf
  Primitive.cexpr! 'rb_obj_frozen_p(self)'
end

Returns whether self is frozen; see Frozen Objects.

See also #format #gem #fork #gets also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0