Editing Incremental compiler (section)

===Interactive programming===
In the [[interactive programming]] paradigm, e.g. in [[Poplog]] related literature,<ref name="poplog">http://www.cs.bham.ac.uk/research/projects/poplog/primer/node14.html {{Webarchive|url=https://web.archive.org/web/20080105215259/http://www.cs.bham.ac.uk/research/projects/poplog/primer/node14.html |date=2008-01-05 }}, teaching primer to Poplog</ref> and <ref>The Smith, Sloman and Gibson 1992 paper below (now available online)</ref> an interactive compiler refers to a compiler that is actually a part of the [[runtime system]] of the source language. The compiler can be invoked at runtime on some source code or data structure managed by the program, which then produces a new compiled program fragment containing [[machine code]] that is then immediately available for use by the runtime system. If the newly compiled fragment replaces a previous compiled procedure the old one will be [[Garbage collection (computer science)|garbage collected]]. This scheme allows for a degree of [[self-modifying code]] and requires [[metaprogramming]] language features. The ability to add, remove and delete code while running is known as [[hot swapping]]. Some interactive programming platforms mix the use of interpreted and compiled code to achieve the illusion that any changes to code are accessible by the program immediately.