initialize_copy(p1)
public
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VALUE rb_obj_init_copy(VALUE obj, VALUE orig) { if (obj == orig) return obj; rb_check_frozen(obj); rb_check_trusted(obj); if (TYPE(obj) != TYPE(orig) || rb_obj_class(obj) != rb_obj_class(orig)) { rb_raise(rb_eTypeError, "initialize_copy should take same class object"); } return obj; }