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<div class="">Hi,</div>
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<div class="">Seems interesting but I have difficulties to understand. Some concret example would help.</div>
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<div class="">Your example could be done in Haskell using IO Monads.</div>
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<div class="">Wouldn’t procedures be inlined as a compilation optimisation in Haskell ?</div>
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<div class="">From my point of view your proposal will degrade code readability and wouldn’t improve efficiency of the execution.</div>
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<div class="">As said earlier, I may have misunderstood. Feel free to correct me.</div>
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<div class="">Regards,</div>
<div class="">Sven</div>
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<div class="">On 23 Oct 2016, at 10:52, Rik Howard <<a href="mailto:rik@dcs.bbk.ac.uk" class="">rik@dcs.bbk.ac.uk</a>> wrote:</div>
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<div class="">Hi Richard</div>
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<div class="">thank you for your reply. It is becoming apparent that my explanation can be made clearer. I'm investigating a language that takes something like core Haskell (a Lambda Calculus augmented with let blocks) to satisfy its pure function requirements
but that takes a different approach when it comes to IO by employing procedures.</div>
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<div class="">For IO, a procedure returns only 'okay' or an error via the mechanism that a function would use for returning values; the non-deterministic values returned by the procedure are done so with variable parameters. For example, to define a procedure
to echo once from standard in to out:</div>
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<div class=""> echo = try (read string) (write string) error</div>
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<div class="">The value coming from standard-in is to be captured in the 'string' out-variable and so is available to be written to standard-out, the 'try' built-in being analogous to 'if'.</div>
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<div class="">Rough (inconsistent) examples exist; its grammar and type system are in a slightly better state but not yet written up properly. What I could quickly add as an appendix, I have but the notation needs to be made more standard for easier comparison.
I am working on another paper that will address the need for a more-concrete and standard presentation. I hope that this goes some way to answering your questions; please say if it doesn't!</div>
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<div class="">Rik</div>
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<div class="gmail_quote">On 22 October 2016 at 20:35, Richard Eisenberg <span dir="ltr" class="">
<<a href="mailto:rae@cs.brynmawr.edu" target="_blank" class="">rae@cs.brynmawr.edu</a>></span> wrote:<br class="">
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<div class="">Hi Rik,</div>
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<div class="">I'm unsure what to make of your proposal, as it's hard for me to glean out what you're proposing. Do you have some sample programs written in your proposed language? What is the language's grammar? What is its type system (stated in terms of inference
rules)? Having these concrete descriptors of the language would be very helpful in assessing this work.</div>
<span class="HOEnZb"><font color="#888888" class="">
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<div class="">Richard</div>
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<blockquote type="cite" class="">
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<div class="">On Oct 22, 2016, at 8:18 AM, Rik Howard <<a href="mailto:rik@dcs.bbk.ac.uk" target="_blank" class="">rik@dcs.bbk.ac.uk</a>> wrote:</div>
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<div class="">Dear Haskell Cafe Subscribers</div>
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<div class="">on the recommendation of someone for whom I have great respect, I have just subscribed to this list, it having been suggested as being a good place for me to get feedback regarding a project that I have been working on. I am humbled by the level
of discussion and it feels to be a very bold step for me to request anybody's time for my words.</div>
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<div class="">The linked document is a four-page work-in-progress summary: the length being stipulated, potential novelty being the other main requirement. Given the requirements, the summary necessarily glosses over some details and is not yet, I fear, completely
correct. The conclusion is, more or less, the one at which I am aiming; the properties are, more or less, the ones that are needed.</div>
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<div class=""><a href="http://www.dcs.bbk.ac.uk/~rik/gallery/work-in-progress/document.pdf" target="_blank" class="">http://www.dcs.bbk.ac.uk/~rik/<wbr class="">gallery/work-in-progress/<wbr class="">document.pdf</a></div>
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<div class="">The work arises from an investigation into functional programming syntax and semantics. The novelty seems to be there but there is too a question as to whether it is simply a gimmick. I try to suggest that it is not but, by that stage, there
have been many assumptions so it is hard to be sure whether the suggestion is valid. If anyone has any comments, questions or suggestions, they would be gratefully received.</div>
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<div class="">Yours sincerely</div>
<div class="">Rik Howard</div>
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<p>--</p>
<p><strong>Sven SAULEAU - Xtuc</strong></p>
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