deque-blog/dsl_arithmetic_5_example_expr.cpp

## dsl_arithmetic_5_example_expr.cpp
 expression e = add({
    cst(1),
    cst(2),
    mul({cst(0), var("x"), var("y")}),
    mul({cst(1), var("y"), cst(2)}),
    add({cst(0), var("x")})
    });
	expression e = add({
	cst(1),
	cst(2),
	mul({cst(0), var("x"), var("y")}),
	mul({cst(1), var("y"), cst(2)}),
	add({cst(0), var("x")})
	});