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But his defense attorney , Halvor Manshaus , said the teenager has done nothing wrong , having only written a small program using security-breaking code developed and sent to him by others . Because I used my own " quinine " binaries to do the research , i avoided the risk of executing maicious code . Software developers will be challenged to create scalable applications , deal with new debugging challenges , and do this while creating maintainable code . Since the package is restricted from having top-level code , executing the source will merely initialize the package 's top-level object with all the top-level functions and variables . Aspect-Oriented Programming ( AOP ) offers a means of injecting new code , such as performance metrics , into existing code , without re-compiling .