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From: | Colin Woodbury |
Subject: | Re: [PATCHv2] Extensions for SRFI-171 (Transducers) |
Date: | Sun, 25 Dec 2022 00:28:13 +0900 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 |
Merry Christmas! Colin On 12/21/22 19:00, Linus Björnstam wrote:
As the author of both the SRFI and the guile code I am very happy you like it. I don't have a computer at the moment, but I looked through the code and it looked great. All additions should have been included in the original SRFI :) one comment: your code uses define-public, which the rest of SRFI-171 code does not. I am not in any position to sign code off for inclusion in guile proper, but if the define-public thing is fixed it very much has my blessing. Best regards Linus Björnstam On Wed, 21 Dec 2022, at 01:48, Colin Woodbury wrote:Happy holidays everyone, I hope everything is going well for you. Since discovering SRFI-171 (Transducers) I have fallen in love with it. Transducers let me "talk the way I want to talk" while knowing that I'm being efficient underneath w.r.t. to iteration and allocation. In using Guile's implementation, I noticed a few common idioms missing that are otherwise present in other languages, so I've added them in a series of patches. I've been using these often for a number of weeks without issue, but of course have added unit tests as well. The full details are in the commit messages, but here are the main highlights: * rfold: The fundamental reducer. This allows the user to turn any two-arg function into a valid reducer, so that they don't need to worry about hand-writing reducers via case-lambda. * rfind: Yields the first item in the transduction that matches some predicate. Nice for locating some specific value from a potentially large data source (e.g. a port). * twindow: Like tsegment, but yields overlapping slices into the data. Cheers, and have a great holiday. Colin Attachments: * 0001-srfi-171-add-twindow-and-various-reducers.patch * 0002-doc-add-new-SRFI-171-reducers-to-the-manual.patch * 0003-srfi-171-add-unit-tests-for-new-functions.patch
0001-srfi-171-add-twindow-and-various-reducers.patch
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0002-doc-add-new-SRFI-171-reducers-to-the-manual.patch
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0003-srfi-171-add-unit-tests-for-new-functions.patch
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0004-doc-added-a-guide-for-writing-custom-reducers.patch
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