If you consider it lacking in I/O, then it takes very little to add conventions for those. E.g. the Binary Lambda Calculus is a programming language [1]. [1] h

If you consider it lacking in I/O, then it takes very little to add conventions for those. E.g. the Binary Lambda Calculus is a programming language [1]. [1] https://www.ioccc.org/2012/tromp/hint.htm https://www.ioccc.org/2012/tromp/hint.htm