Re: [Bug-apl] Common IO operations

[Juergen Sauermann]

Hi Elias,

sounds like a case for FILE_IO and partition:

1. get a line with fgets() in FILE_IO
2. call partition (dyadic ⊂)

For example (FILE_IO part omitted):

TEXT←"Hello,World,xyz"

(TEXT≠",")⊂TEXT
Hello World xyz

⍴(TEXT≠",")⊂TEXT
3
⊃((TEXT≠",")⊂TEXT)[1]
Hello
⊃((TEXT≠",")⊂TEXT)[2]
World
⊃((TEXT≠",")⊂TEXT)[3]
xyz

/// Jürgen


On 03/09/2014 03:58 PM, Elias Mårtenson wrote:
> A common need that I have is to be able to easily read and write data 
> from/to files. For me, this data is usually in CSV form.
>
> Up until now, I've loaded them into Emacs and used my tools to push 
> the tabular data into variables. However, it would be nicer to have 
> something native in GNU APL itself.
>
> I've been thinking of writing a library of functions using the file_io 
> native library as the underlying mechanism.
>
> How do other APL's handle this? I've seen the TIE stuff in Dyalog and 
> Nars, and they seem painful to use.
>
> Regards,
> Elias