How do you want them ordered?

The string lt operator simply isn't going to work. sort expects an expression that returns one of three values: less than 0 iff lhs less than rhs, 0 iff lhs equals rhs, and greater than 0 iff lhs greater than rhs. The cmp operator performs that operation for strings and <=> (the spaceship operator) does it for numerical values.

If you want some other comparison you need to roll up your own expression that generates -1, 0 or 1 as appropriate for combinations of lhs and rhs values, but you need to specify the desired sort order before you can code it!

True laziness is hard work

In reply to Re: Comparison of alphanumeric strings by GrandFather
in thread Comparison of alphanumeric strings by Anonymous Monk

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