9 lines
285 B
Julia
9 lines
285 B
Julia
function evalwithx(expr::Expr, a, b)
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a = eval(quote let x = $a; return $expr end end)
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b = eval(quote let x = $b; return $expr end end)
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return b - a
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end
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evalwithx(expr::AbstractString, a, b) = evalwithx(parse(expr), a, b)
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evalwithx(:(2 ^ x), 3, 5)
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evalwithx("2 ^ x", 3, 5)
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