End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

NilClass#to_a

nil.to_a → []

static VALUE
nil_to_a(VALUE obj)
{
    return rb_ary_new2(0);
}

Always returns an empty array.

Example

nil.to_a   #=> []

See also #rationalize #to_c #nil? #to_d also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0