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Re: Octals [message #27131 is a reply to message #27128]

Thu, 11 October 2001 11:37

Martin Downing
Messages: 136
Registered: September 1998

Senior Member

"Reimar Bauer" <r.bauer@fz-juelich.de> wrote in message
news:3BC5C1D5.9FB46B1C@fz-juelich.de...
> Martin Downing wrote:
>>
>> IDL> title = "frequency " + string('52'Ob) + " wavelength"
>
> Normaly we should always use ' for strings.
>
> Because " with numbers gives an octal number, e.g.
>
> IDL> print, "10
> 8

Well if anyone reading my code misread "frequency" as an octal number,
then I humbly appollogise!
Your right though, but Im afraid use of double quotes for strings is deep
seated
for me from C/C++. NOw we are on the topic, I've got to say that
interpreting "01 as shorthand for
octal 01 was just a daft overload of the language, it really seems
half-baked, look at these examples for illustration:

IDL> help, "1034
<Expression> INT = 540
; OK....

IDL> help, "1034r
help, "1034r
^
% Syntax error.
; fair enough

IDL> help, "10349673
<Expression> INT = 540
; *&*&*??????
IDL> help, "910349673
<Expression> STRING = '910349673'

IDL LOGIC: "Digits 8 or 9 indicate that the string is indeed a string if
they appear first, if they appear later on then let's just discard them -
surely the programmer didnt want them anyway..."

cheers

Martin

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[Message index]

		Re: Octals By: george.mccabe on Thu, 11 October 2001 12:48
		Re: Octals By: Martin Downing on Thu, 11 October 2001 11:37
		Re: Octals By: R.Bauer on Thu, 11 October 2001 09:01
		Re: Octals By: R.Bauer on Thu, 11 October 2001 08:59
		Re: Octals By: Steve Cole on Thu, 11 October 2001 08:48
		Re: Octals By: Martin Downing on Thu, 11 October 2001 08:11
		Re: Octals By: Jaco van Gorkom on Thu, 11 October 2001 07:40
		Re: Octals By: Steve Cole on Fri, 12 October 2001 02:20
		Re: Octals By: Craig Markwardt on Thu, 11 October 2001 22:20
		Re: Octals By: Steve Cole on Fri, 12 October 2001 02:07

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