| buf1 = mk(mkarray(2)[0, a][1, b], 2, 1, 1), ar0 = buf1 .data ∧ a1 = c ∧ i0 = 0, buf = buf1 .data:= ar0[i→n(i0), a1] .len:= ((buf1 .data:= ar0[i→n(i0), a1]) .len + 1) ⊦ ⟪a2 := a⟫ ⟪pop#(; buf, a2)⟫ ⟪assert#(a2 = b) ; pop#(; buf, a2) ; assert#(a2 = c)⟫ true |
buf1 = mk(mkarray(2)[0, a][1, b], 2, 1, 1), ar0 = buf1 .data ∧ a1 = c ∧ i0 = 0, buf = buf1 .data:= ar0[i→n(i0), a1] .len:= ((buf1 .data:= ar0[i→n(i0), a1]) .len + 1) ⊦ ⟪pop#(; buf, a)⟫ ⟪assert#(a = b) ; pop#(; buf, a) ; assert#(a = c)⟫ true
[[CONCRETESIMPRULES : ()]]