126 lines
3.9 KiB
Markdown
126 lines
3.9 KiB
Markdown
Title: WTFunctional – Talk slides and examples
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Author: Oliver Rümpelein
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Affiliation: Member of F3L-Team
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Quotes Language: english
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Date: 2016-05-25
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CSS: /md.css
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Html header: <script type="text/javascript">
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window.onload = function() {
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var loc=window.location.hostname;
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if(loc="www.pheerai.de") {
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var warn=document.getElementById("warn");
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warn.style.display="none";
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};
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};
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</script>
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# [%Title] #
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<div id="warn" markdown=1>Want to read this file properly? Visit the
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[official homepage][wtfoff]!</div>
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The talk was first held at [3. F3L-GPN][f3l] in Regensburg, on 2015-06-11. Its
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target is to show how even non-functional programming languages can profit from
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using functional paradigms.
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{{TOC}}
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## Files ##
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You may download both [the slides PDF][ext-slides] in handout mode, and a
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[source archive][ext-examples] of the examples used during the talk.
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## Structure ##
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The talk is split into three main parts:
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Part One
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: deals with functional programming in general. What are its benefits?
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: Afterwards, the main ideas behind it get shown using [Haskell][haskell].
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Part Two
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: is all about using some of the mentioned ideas in [Python][python].
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: The focus lies on getting a feeling for functional programming, using a
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language that is heavily influenced by those designs.
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Part Three
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: tries to transfer those ideas to C++.
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: It also deals with the weaknesses and advantages of the modern C++11/14,
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and gives a preview of some features in C++17/20/22
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## Pages ##
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There are two main-pages for this talk. One is my [homepage][wtfoff], the other
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one is the [GitLab-server of F3L][f3lgit] which contains the whole example and
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slide sources.
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## Compiling ##
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If any errors occur, please [drop me a mail][mailto].
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### Slides ###
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Unfortunately, the slides have quite a lot of dependencies. You need the
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following:
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* A working instance of [LuaLaTeX][lualatex] (some decent [texlive-distro][texlive] should suffice),
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* [Pygments][pygments] up-and-running (usually in the repositories as
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'python-pygmetize' or so),
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* a working installation of the [minted][minted] package for latex (once
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again, texlive should be enough), and
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* the two fonts [Inconsolata G][inconsolata-g] and [Fira Sans][fira] installed,
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* not to talk of biber with biblatex.
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Then, compile using
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```
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lualatex -shell-escape wtfunctional
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biber wtfunctional
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lualatex -shell-escape wtfunction
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```
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### Examples ###
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Exmaple 00_dafunc.cpp is not that important, and should build with any decent C++-compiler.
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For the haskell-example, use `ghci`, then `:load 01_haskell.hs`. The functions provided are:
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* extract (≅ fst)
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* addto
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* mfold (≅ foldl)
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02_python.py can be executed using `python`, or inspected using `python -m`. It
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provides:
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* a debug-function usable as decorator
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* a bubblesort-implementation using functional paradigms.
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03_cpp.cpp needs a compiler capable of C++11. It shows code- and
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runtime-examples for `for_each`, `transform` and `accumulate`.
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04_cpp17.cpp needs a compiler capable of C++17-folds, `gcc` or `clang` should
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do. Then compile using the option `std=c++1z`
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## License ##
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This is licensed under MIT-License. For the exact formulation, see License.txt.
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[ext-examples]: https://www.pheerai.de/assets/wtf_examples.tar.gz
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[f3l]: https://www.f3l.de
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[f3lgit]: https://git.f3l.de/pheerai/wtfunctional
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[fira]: https://github.com/mozilla/Fira
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[haskell]: https://www.haskell.org
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[inconsolata-g]: http://leonardo-m.livejournal.com/77079.html
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[lualatex]: http://luatex.org
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[mailto]: mailto:oli_r@fg4f.de
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[minted]: http://github.com/gpoore/minted
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[pygments]: http://pygments.org/
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[python]: https://python.org/
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[ext-slides]: https://www.pheerai.de/assets/wtf_slides.pdf
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[texlive]: https://www.tug.org/texlive/
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[wtfoff]: https://www.pheerai.de/wtf/
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