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Racket: execute the file and stay interactive

Is there a way from the command line to run the Racket file and stay online?

eg. same thing in Python:

python -i <file.py>
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2 answers

Assuming a foo.rktthat is:

#lang racket
(provide x)
(define x 42)
(define y 4242)

Then you can use -ito indicate interactive mode (= REPL) along with -tto request a file:

$ racket -it foo.rkt
Welcome to Racket vX.X.X.
> x
42
> y
y: undefined; ...
> (exit)

Please note that yit is not connected, since it is in the module and is not provided. Rather, you want the REPL to be “inside” the module foo, which you can use enter!to go to the module namespace, or in the REPL:

$ racket
> (enter! "foo.rkt")
> x
42
> y
4242
> (exit)

, -e ( -i REPL):

$ racket -i -e '(enter! "foo.rkt")'
Welcome to Racket vX.X.X.
> x
42
> (+ x 12)
54
> (exit)

xrepl

, , , xrepl. ~/.racketrc :

(require xrepl)

:

$ racket
Welcome to Racket vX.X.X.
-> ,en foo.rkt
42
"foo.rkt"> x
42
"foo.rkt"> (+ x 12)
54
"foo.rkt"> ,ex

,en, XREPL - , , :

$ racket
Welcome to Racket vX.X.X.
-> ,h
; Available commands:
;   help (h ?): display available commands
;   exit (quit ex): exit racket
;   cd: change the current directory
;   pwd: display the current directory
;   shell (sh ls cp mv rm md rd git svn): run a shell command
;   edit (e): edit files in your $EDITOR
;   drracket (dr drr): edit files in DrRacket
;   apropos (ap): look for a binding
;   describe (desc id): describe a (bound) identifier
;   doc: browse the racket documentation
;   require (req r): require a module
;   require-reloadable (reqr rr): require a module, make it reloadable
;   enter (en): require a module and go into its namespace
;   toplevel (top): go back to the toplevel
;   load (ld): load a file
;   backtrace (bt): see a backtrace of the last exception
;   time: time an expression
;   trace (tr): trace a function
;   untrace (untr): untrace a function
;   errortrace (errt inst): errortrace instrumentation control
;   profile (prof): profiler control
;   execution-counts: execution counts
;   coverage (cover): coverage information via a sandbox
;   switch-namespace (switch): switch to a different repl namespace
;   syntax (stx st): set syntax object to inspect, and control it
;   check-requires (ckreq): check the `require of a module
;   log: control log output
;   install!: install xrepl in your Racket init file

Emacs

, Emacs, - :

+16

racket -if <file.rkt>

,

#lang racket
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