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vault backup: 2023-10-11 11:33:06

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Louis Gallet 2023-10-11 11:33:06 +02:00
parent ec8c78cf4e
commit 745172f553
Signed by: lgallet
SSH Key Fingerprint: SHA256:qnW7pk4EoMRR0UftZLZQKSMUImbEFsiruLC7jbCHJAY
1 changed files with 10 additions and 10 deletions
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20
Algo/CM/Lists.md
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@ -14,7 +14,7 @@ USES
OPERATIONS
emptylist : -> list (* Internal operations of list*)
cons : list x element -> list (* Internal operations of list *)
cons : element x list -> list (* Internal operations of list *)
tail : list -> list (* Internal operations of list *)
head : list -> box (* Internal operations of box *)
contents : box -> element (* Observer of box *)
@ -22,17 +22,17 @@ OPERATIONS
next : box -> box (* Internal operation of box *)
PRECONDITIONS
tail(_l_) is-defined-iaoi _l_ ≠ emptylist
head(_l_) is-defined-iaoi _l_ ≠ emptylist
first(_l_) is-defined-iaoi _l_ ≠ emptylist
tail(l) is-defined-iaoi l ≠ emptylist
head(l) is-defined-iaoi l ≠ emptylist
first(l) is-defined-iaoi l ≠ emptylist
AXIOMS
first(_l_) = contents(head(_l_))
tail(cons(_e,l_)) = _l_
first(cons(_e,l_)) = _e_
next(head(_l_)) = head(tail(_l_))
first(_l_) = contents(head(l))
tail(cons(_e,l_)) = l
first(cons(_e,l_)) = e
next(head(_l_)) = head(tail(l))
WITH
list _l_
element _e_
list l
element e
```