End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

NilClass#to_f

nil.to_f → 0.0

static VALUE
nil_to_f(VALUE obj)
{
    return DBL2NUM(0.0);
}

Always returns zero.

Example

nil.to_f   #=> 0.0

See also #to_d #to_h #to_c #to_i also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1