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% !TEX root = article.tex  \section{Case Study} Study: Optimizing \feval\ in McVM}  \label{se:case-study}  In this section we show how \osrkit\ can be used in a production VM to implement aggressive optimizations for dynamic languages. We focus on MATLAB's \feval\ construct, a widely used built-in higher-order function that applies the function passed as first parameter to the remaining arguments (e.g., {\tt feval(g,x,y)} computes {\tt g(x,y)}). This feature is used in many classes of numerical computations that benefit from having functions as parameters.