One is being returned, the other isn't. You cannot change line 8 without causing the returned type to depend on the value.
> On Aug 16, 2015, at 10:10 AM, Sisyphuss <[email protected]> wrote: > > In the Rational.jl : > > In Line 8: `num == den == zero(T)` uses `zero(T)` to represent 0 > In Line 9: `g = den < 0` uses `0` to represent 0 > > Why this difference? My intuition tells me that in Line 8, it can be replaced > by 0 without performance issue. > >
