Re: [Reduce-algebra-developers] How to use "in" and "out" and "shut" commands with file names that saved as variables?

[Raffaele V. <raf...@un...>]

On 07/01/24 01:01, Nasser M. Abbasi wrote:
> 
> in my script if I do
> 
> ------------
> in "B.red";
> ------------
> 
> It works. Where B.red is file in same folder.
> 
> But if I do
> 
> -----------
> file_name := "B.red";
> in file_name;
> -------------
> 
> It gives error
> 
> +++ Error file could not be opened: "file_name"
> 
> It looks like "in", "out" and "shut" commands want literal arguments.
> But this is very limiting for me, as I need to pass the names of
> the files to process in variables and not hard code the file names,
> as I have 100's of files that I need to put in a list
> and loop over.
> 
> Is there a way around this?

Years ago I had a similar problem, and somebody told me the following trick:

file_name := "B.red";

in <<file_name>>;

that works fine, if you do not need something more sophisticated.
In essence, the string gets evaluated from the code block << ... >>.

Raf


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