Re: [Chicken-users] display with cyclic structures or just limit on characters?

[Felix]

From: Patrick Li <address@hidden>
Subject: [Chicken-users] display with cyclic structures or just limit on 
characters?
Date: Tue, 15 Feb 2011 23:39:40 -0500

> Hello everyone,
> I'm just debugging some software with display statements, except that I am
> using some cyclic data structures.
> 
> If I use (display my-data-structure) on a cyclic structure, it just floods
> the screen and crashes the program.
> 
> Is there an existing cycle-detecting pretty-printer for Chicken? Or just a
> simple way of limiting the number of characters that (display) will output?

There is the srfi-38 egg, which supports circular data. Alternatively,
you can use the internal function

  (##sys#with-print-length-limit LIMIT THUNK)

But srfi-38 is recommended.


cheers,
felix