| buf = mk(mkarray(2)[0, a][1, b][0, c], 2, 0, 1) ⊦ ⟪pop#(; buf, b)⟫ ⟪assert#(b = c)⟫ true |
buf = mk(mkarray(2)[0, a][1, b][0, c], 2, 0, 1) ⊦ ⟪get#(buf .first, buf .data; a)⟫ ⟪buf := buf .first:= ((buf .first + 1) % buf .size) ; buf := buf .len:= (buf .len - 1)⟫ ⟪assert#(a = c)⟫ true
[[CONCRETESIMPRULES : ([CSIMPDECL : pop# (;buf, a) { get#(buf .first, buf .data; a) ; buf := buf .first:= ( ( buf .first + 1 ) % buf .size ) ; buf := buf .len:= (buf .len - 1) }])]]