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NIFs and C-Nodes
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! Lukas Rieder
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Erlang and Elixir
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Erlang and Elixir ❤
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Erlang and Elixir are fast
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fast enough for 99%
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Erlang and Elixir are stable
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stable for 99.99%
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Chances are you will never need a NIF
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Excursion: HTML Parsers
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{"html", [{"lang", "en"}], [_]} Excursion: HTML Parsers
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What is the correct tree?
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<a> What is the correct tree?
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<a> What is the correct tree?
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<a> Answer A: <svg><desc><style><a> What is the correct tree?
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<a> Answer B: <svg><desc><style><a> What is the correct tree?
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<-text>: <a> Answer C: <svg><desc><style><a> What is the correct tree?
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Answer D: <a> What is the correct tree?
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<a> Answer A: <html> <head> <body> <svg> <desc> <style> <a> Answer B: <html> <head> <body> <svg:svg> <svg:desc> <svg:style> <-text>: <a> Answer C: <html> <head> <body> <svg:svg> <svg:desc> <svg:style> <svg:a> Answer D: <svg><desc><style><a> What is the correct tree?
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<-text>:
Answer C: <a> What is the correct tree?
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floki html5ever mochiweb HTML parsers in Erlang *2017 edition
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fast, correct
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fast, correct floki html5ever mochiweb
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fast, correct floki html5ever mochiweb
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floki html5ever mochiweb myhtml fast, correct
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No content
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floki html5ever mochiweb myhtml Usable in Erlang
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Implementing Bindings in Erlang
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NIFs
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Port drivers
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C-Nodes
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What are NIFs?
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Native Implemented Functions
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NIFs VM module shared library
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superfast NIFs
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superfragile NIFs
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Excursion: NIFs on RUST https://github.com/hansihe/rustler
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VM external program stdin/out Port Drivers
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superSTDIN/STDOUT Port Drivers
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C-Nodes erlang network VM hidden node client or server VM VM
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supercompromise
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superannoyingtomaintain
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Meet: cnodex
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Mount a C-Node inside your supervision tree
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Please open your Terminal, Lukas.
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https://github.com/Overbryd/cnodex {:cnodex, git: "…"}
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https://github.com/Overbryd/myhtmlex {:myhtmlex, "~> 0.1.3"}
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http://github.com/Overbryd/cnodex @Overbryd
[email protected]
https://stackoverflow.com/story/Overbryd Work with me: