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Re: struct.el -- a package to encode/decode binary data
From: |
Stefan Monnier |
Subject: |
Re: struct.el -- a package to encode/decode binary data |
Date: |
Thu, 21 Mar 2002 11:58:34 -0500 |
> I just tried to measure whether there is any difference, by copying
> between two strings like this:
> (let ((i (length a)))
> (while (> i 0)
> (setq i (1- i))
> (aset a i (aref b i))))
>
> a and b are either both multibyte or both unibyte and initialized
> to all NULs. The difference in time is very small if there is any...
Try it with a initialized to all NULs and b initialized to all
eight-bit-graphic chars.
> > If the string holds non-ASCII text, yes. But not in your case, where the
> > ``string'' holds binary data, I think.
This is only true if binary values between 128 and 256 are represented
as a single-byte, but that's not the case in multibyte strings.
Stefan
- Re: struct.el -- a package to encode/decode binary data, (continued)
- Re: struct.el -- a package to encode/decode binary data, Luke Gorrie, 2002/03/19
- Re: struct.el -- a package to encode/decode binary data, Kim F. Storm, 2002/03/19
- Re: struct.el -- a package to encode/decode binary data, Thien-Thi Nguyen, 2002/03/19
- Re: struct.el -- a package to encode/decode binary data, Richard Stallman, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Eli Zaretskii, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Kim F. Storm, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Eli Zaretskii, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Kim F. Storm, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data,
Stefan Monnier <=
- Re: struct.el -- a package to encode/decode binary data, Eli Zaretskii, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Stefan Monnier, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Eli Zaretskii, 2002/03/22
- Re: struct.el -- a package to encode/decode binary data, Miles Bader, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Richard Stallman, 2002/03/22
- Re: struct.el -- a package to encode/decode binary data, Stefan Monnier, 2002/03/21
- Re: struct.el -- a package to encode/decode binary data, Richard Stallman, 2002/03/22
Re: struct.el -- a package to encode/decode binary data, Kenichi Handa, 2002/03/21
Re: struct.el -- a package to encode/decode binary data, Kenichi Handa, 2002/03/21