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Re: Is there any way to specify an octal number in Tcl 9.0?

From Don Porter <donald.porter@nist.gov>
Newsgroups comp.lang.tcl
Subject Re: Is there any way to specify an octal number in Tcl 9.0?
Date 2026-03-25 08:30 -0400
Organization ACMD ITL NIST
Message-ID <10q0ki0$1tthd$1@dont-email.me> (permalink)
References <10pvkhe$1jjpc$1@dont-email.me> <yga8qbgqm89.fsf@akutech.de>

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On 3/25/26 05:42, Ralf Fassel wrote:
> * Choosechee <choosechee@pm.me>
> | [...] so I need to know exactly what number formats are supported.
> 
> See
>    https://www.tcl-lang.org/man/tcl9.0/TclCmd/expr.html#M6
> 
> [expr] manpage, subsection "Operands/numeric value"
> 
>    numeric value
>          Either integer or floating-point. The first two characters of an
>          integer may also be 0d for decimal, 0b for binary, 0o for octal
>          or 0x for hexadecimal.

Worth mentioning that Tcl has understood the 0o prefix since Tcl 8.5.0,
so your scripts can use it in the confidence that it will function in
any installed Tcl you are likely to find.

-- 
| Don Porter            Applied and Computational Mathematics Division |
| donald.porter@nist.gov             Information Technology Laboratory |
| http://math.nist.gov/~DPorter/                                  NIST |
|______________________________________________________________________|

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Thread

Is there any way to specify an octal number in Tcl 9.0? Choosechee <choosechee@pm.me> - 2026-03-24 22:24 -0500
  Re: Is there any way to specify an octal number in Tcl 9.0? Harald Oehlmann <wortkarg3@yahoo.com> - 2026-03-25 07:31 +0100
  Re: Is there any way to specify an octal number in Tcl 9.0? Ralf Fassel <ralfixx@gmx.de> - 2026-03-25 10:42 +0100
    Re: Is there any way to specify an octal number in Tcl 9.0? Don Porter <donald.porter@nist.gov> - 2026-03-25 08:30 -0400
  Re: Is there any way to specify an octal number in Tcl 9.0? Choosechee <choosechee@pm.me> - 2026-03-25 10:32 -0500

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