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March 5, 2022 18:32
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FoldSort.tla
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| No annotation found for Frob$1. Make sure that you've put one in front of Frob$1. E@18:30:44.591 | |
| ----- MODULE FoldSort ----- | |
| EXTENDS Integers, Sequences, Apalache | |
| \* @type: (Seq(Int), (a => Bool)) => Seq(Int); | |
| FilterSeq(seq, cmp(_)) == | |
| LET \* @type: (Seq(Int), Int) => Seq(Int); | |
| Frob(acc, e) == IF cmp(e) THEN acc \o <<e>> ELSE acc | |
| IN FoldSeq(Frob, <<>>, seq) | |
| \* @type: (Seq(Int), Int) => Seq(Int); | |
| SortedSeq(sorted, e) == | |
| LET \* @type: Int => Bool; | |
| Gt(a) == a > e | |
| \* @type: Int => Bool; | |
| Lt(a) == a < e | |
| IN FilterSeq(sorted, Lt) \o <<e>> \o FilterSeq(sorted, Gt) | |
| \* @type: (Seq(Int), Seq(Int)) => Seq(Int); | |
| Sort(s1, s2) == | |
| FoldSeq(SortedSeq, <<>>, s1 \o s2) | |
| ===== |
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