I'll second-third Alexis and Stephen. But if you really want these things to run in a Scheme in addition to Racket, you may wish to emulated big-bang and universe style "keywords" because Schemes don't do #:loop keywords. You won't have to change surface syntax or modify the reader of a Scheme to port your embedded DSL programs. But do you use syntax-parse to implement this. My own implementation predates syntax-parse, my needs for freshmen and pre-college students are different from yours, and some of my colleagues don't like that I use the power of abstraction that Racket actually offers (lambda, lambda, lambda(.
-- Matthias On Jul 6, 2015, at 5:35 PM, Alexis King wrote: > I’ll second Stephen’s point about keyword arguments. They’re quite common in > idiomatic Racket, and they are probably the most direct way to address the > points you’ve mentioned. > > Another tool that Racket gives you to make scripting very easy is the ability > to create fairly expressive DSLs with little effort. I think the best way to > do this is to create a macro or set of macros that expands to simple > functions (e.g. +sound), and then still provide those functions to the user > if they want to do more complex things with them than the DSL provides. For a > good example of this, see racket/cmdline’s `command-line` and > `parse-command-line`. > > For more details, see the documentation for syntax-parse, which can > effectively be a DSL for writing DSLs. It can be used for anything from > adding a little sugar to creating a composable macro for handling whole > batches of operations to creating a whole #lang as a scripting DSL. > > Alexis > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
