18 lines
483 B
Text
18 lines
483 B
Text
; Rebol's sort function is not stable by default. You need to use a custom comparator to make it so.
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blk: [
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[UK London]
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[US New-York]
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[US Birmingham]
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[UK Birmingham]
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]
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sort/compare blk func [a b] [either a/2 < b/2 [-1] [either a/2 > b/2 [1] [0]]]
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; Note that you can also do a stable sort without nested blocks.
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blk: [
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UK London
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US New-York
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US Birmingham
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UK Birmingham
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]
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sort/skip/compare blk 2 func [a b] [either a < b [-1] [either a > b [1] [0]]]
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