9.2 Running Rhombus Programs🔗ℹ

A programming environment such as DrRacket (see Editing Rhombus Programs) can run Rhombus programs. To run a module "prog.rhm" at the command line, you can use

rhombus prog.rhm

or

racket prog.rhm

Using the rhombus executable is like using the racket executable with -y, which caches compilation of a module to a "compiled" a subdirectory (and the same for any dependency of the module to run).

Using racket or using rhombus with the -u flag skip a compilation check, but it still uses a cached compilation if available. Skipping the compilation check for a module and its dependencies may significantly reduce start-up time, especially all modules are already compiled. Meanwhile, a module’s compilation does not have to be cached, so always using just racket or always using -u is allowed. Beware, however, of using a cached compilation when a dependency has changed, because the cached compilation may not be compatible with the changed module, and compatibility checks are limited at that level.