9. The one or more computer-readable memory devices or storage devices of claim 7 , the acts further comprising: reusing the reusable expression graph by: binding the parameter node to another bindable term comprising a third expression, and evaluating the first expression using the third expression instead of the second expression without rebuilding an entirety of the first expression.
9. The one or more computer-readable memory devices or storage devices of claim 7 , the acts further comprising: reusing the reusable expression graph by: binding the parameter node to another bindable term comprising a third expression, and evaluating the first expression using the third expression instead of the second expression without rebuilding an entirety of the first expression. 12. The one or more computer-readable memory devices or storage devices of claim 9 , wherein the third expression contains a plurality of hard values.