ice-9 r4rs

ice-9 r4rs

[Sebastian Tennant]

Hi,

(info "(guile-1.8)File Ports")

   -- Scheme Procedure: open-input-file filename
       Open FILENAME for input.  Equivalent to
            (open-file FILENAME "r")

   -- Scheme Procedure: open-output-file filename
       Open FILENAME for output.  Equivalent to
            (open-file FILENAME "w")

These procs are found in ice-9 r4rs.  The docs make no mention of this
fact.

Having found the procs, you'd expect

  (use-modules (ice-9 r4rs))

to work but it's broken.  r4rs.scm doesn't even contain a call to
define-module.

Although:

 load-from-path "ice-9/r4rs"

doesn't throw an error open-input-file and open-output-file are still
not bound.

Sebastian

Re: ice-9 r4rs

[Ludovic Courtès]

Hi,

Sebastian Tennant <sebyte@smolny.plus.com> writes:

> (info "(guile-1.8)File Ports")
>
>    -- Scheme Procedure: open-input-file filename
>        Open FILENAME for input.  Equivalent to
>             (open-file FILENAME "r")
>
>    -- Scheme Procedure: open-output-file filename
>        Open FILENAME for output.  Equivalent to
>             (open-file FILENAME "w")
>
> These procs are found in ice-9 r4rs.  The docs make no mention of this
> fact.

With Guile 1.8:

  $ guile
  guile> (help open-input-file)
  `open-input-file' is a procedure in the (guile) module.

  Takes a string naming an existing file and returns an input port
  capable of delivering characters from the file.  If the file
  cannot be opened, an error is signalled.
  guile> (help open-output-file)
  `open-output-file' is a procedure in the (guile) module.

  Takes a string naming an output file to be created and returns an
  output port capable of writing characters to a new file by that
  name.  If the file cannot be opened, an error is signalled.  If a
  file with the given name already exists, the effect is unspecified.
  guile> (procedure? open-input-file)
  #t
  guile> (procedure? open-output-file)
  #t

Both procedures are bound by default.

Which version of Guile are you using?

Thanks,
Ludovic.

Re: ice-9 r4rs

[Sebastian Tennant]

Quoth ludo@gnu.org (Ludovic Courtès):
> Both procedures are bound by default.

Hmm... so they are.  Last night must have been their night off... or
mine perhaps :-)

Seb