That is what my code does. It sorts by RouteDistance, but in case it is zero, it is replaced with Distance. Your example, though, uses Distance even if the RouteDistance is zero on the other element being compared to. This is generally not possible, consider:
ID => 1, Distance => 10, RouteDistance => 1,
ID => 2, Distance => 9,  RouteDistance => 0,
ID => 3, Distance => 8,  RouteDistance => 2,

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According to your logic, ID1 < ID3 (1<2), but ID3 < ID2 (8<9) and ID2 < ID1 (9<10), therefore ID3 < ID1. Your order is not transitive.

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^7: Sorting an array of hashes with an exeption by choroba
in thread Sorting an array of hashes with an exception by martin_87

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