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From: "Ralph Douglass" <ralph@grayskies.net>
To: "Caml List" <caml-list@inria.fr>
Subject: confusion about mutable strings
Date: Sun, 10 Feb 2008 12:46:19 -0500	[thread overview]
Message-ID: <71767b800802100946o4d465b79xad9b1f9515f7e69f@mail.gmail.com> (raw)

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I'm a little confused by some behavior I'm seeing.  Here is an example from
the toplevel:

# let foo () =
  let str = "ffff" in
  Printf.printf "%s\n%!" str;
  str.[0] <- 'r';
  str.[1] <- 'r';
  str.[2] <- 'r';
  str.[3] <- 'r';
  str
  ;;
val foo : unit -> string = <fun>
# foo ();;
ffff
- : string = "rrrr"
# foo ();;
rrrr
- : string = "rrrr"
#

Why isn't the output for the second printf also "ffff"?  It seems like it's
completely ignoring "let str =" the second time.

Any thoughts?  Is this a bug, or something I just don't know about?

3.10.1 on intel osx 10.5.1, installed from godi.

Thanks,
Ralph

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             reply	other threads:[~2008-02-10 17:46 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-10 17:46 Ralph Douglass [this message]
2008-02-10 18:03 ` [Caml-list] " Bünzli Daniel
2008-02-11  0:22   ` Ralph Douglass
2008-02-11 10:01     ` Loup Vaillant
2008-02-11 13:46       ` Ralph Douglass
2008-02-12 19:33         ` Ashish Agarwal

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