Does this file contain valid Julia statements? In which case just `include` 
the file. 

Say you have a file called config.txt in the current director with the 
following text:

a=1

Then, on the REPL

julia> include("config.txt")
1

julia> a
1


If the statements are not valid Julia, then you'll have to implement your 
own parser. You can read the contents of the file into a string use 
`readall` 

julia> x=readall("config.txt")
"a=1\n"


On Monday, 18 August 2014 06:33:37 UTC+1, Peter wrote:
>
>  Suppose there is in Matlab a library that can read files with a certain 
> extension, say .xyz, and instruct Matlab what to do. The file would contain 
> instructions about dynamic systems with a certain number of variables, 
> shocks and so on. 
>
>  Can I do the same thing in Julia and how?
>
>  For example,
>
>  Let's say I want to declare in a file with extension xyz a dynamic system 
> with 2 equations:
>  x = x(-1) + y^2;
>  y = y(-1);
>
>  Thank you!
>  
>

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