Subj : Re: Do all programming languages use files? To : comp.programming From : Risto Lankinen Date : Fri Sep 02 2005 08:37 am "Past" wrote in message news:1125311420.471389.249420@g14g2000cwa.googlegroups.com... > I was doing a research to see if all the programming languages ever > written have atleast some small level capability of successfully > writing and reading from files? The original Forth language does not have a notion of file. The program source code is edited in what are called "blocks". Blocks were actually mapped 1K chunks of physical memory. To execute a program was to load a "bootstrap" block, containing definitions, and instructions to load other blocks with more definitions, etc... until one block would contain the top-level command to start the program. This was possible, because it is very easy for the Forth interpreter to switch between "compile" and "execute" modes. Most, if not all, more modern implementations do recognize the concept of a file system. - Risto - .