Applying code functions to a program

execute[ p := q * 2;

b := not b ]

execute[ p := q * 2 ]

evaluate[ q * 2 ]

evaluate[ q ]

evaluate[ 2 ]

apply-binary[ * ]

assign[ p ]

execute[ b := not b ]

evaluate[ not b ]

evaluate[ b ]

apply-unary[ not ]

assign[ b ]

LOAD q

LOADL 2

CALL mult

STORE p

LOAD b

CALL not

STORE b

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