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file_lines and expand path [message #49635 is a reply to message #49556]

Fri, 04 August 2006 08:23

FL
Messages: 17
Registered: April 2006

Junior Member

Hi,

I am implementing file_lines in FL and was wondering what to return when
the input path expands to multiple files. The IDL reference guide says
nothing. I have run IDL and got curious result:

IDL> help, file_lines('*.pro')
<Expression> LONG64 = 15

I have 448 .pro files in the current directory, with a total of 10k lines.
IDL seems to be randomly picking a single file and reporting its length
(probably the first match in readdir()).

What do you expect to get?

Possibilities:

1. never expand (but why do we have NOEXPAND then?)
2. give an error message if the expansion results in more than one file
3. return the total length of files
4. return the total length of files if a new keyword TOTAL was set
5. do as IDL, pick a single file silently

thanks,
lajos

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[Message index]

		Interpolation question By: rkj on Wed, 25 July 2001 11:18
		Re: interpolation question By: chen123.dian on Thu, 20 April 2006 07:50
		Re: interpolation question By: Mark Hadfield on Thu, 20 April 2006 12:26
		Re: interpolation question By: peter.albert@gmx.de on Thu, 20 April 2006 08:47
		Re: interpolation question By: peter.albert@gmx.de on Thu, 20 April 2006 01:20
		Re: interpolation question By: news.verizon.net on Mon, 24 April 2006 12:47
		Re: interpolation question By: Paul Van Delst[1] on Mon, 24 April 2006 12:09
		Re: interpolation question By: Jo Klein on Mon, 24 April 2006 12:04
		Re: interpolation question By: chen123.dian on Mon, 24 April 2006 11:35
		Re: Interpolation question By: mchinand on Thu, 03 August 2006 09:01
		file_lines and expand path By: FL on Fri, 04 August 2006 08:23
		Re: Interpolation question By: greg michael on Thu, 03 August 2006 04:04
		Re: Interpolation question By: Mike Wallace on Wed, 02 August 2006 13:34
		Re: Interpolation question By: JD Smith on Wed, 02 August 2006 09:31
		Re: Interpolation question By: mchinand on Wed, 02 August 2006 09:37

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