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Le petit langage fonctionnel (mais pas que) made in Lyon que vous pouvez modifier vous-mêmes. Julien Ponge Philippe Charrière

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Principal Software Engineer ( ) @jponge

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Technical Account Manager ( ) @k33g_org Customer Success Team

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Jamais édité (oss) https://github.com/3monkeys/play.rules

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JooFlux Dynamic AOP using invokedynamic April 2012

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public static java.lang.Object foo(java.lang.Object); Code: 0: ldc #19 2: invokedynamic #29, 0 7: pop 8: aconst_null 9: areturn runtime-bound call site method handles + combinators (type, logic, ...)

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July 2012 Summer hack for fun…

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August 2012 Fibonacci… no way back!

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May 2013 My 1st PR: readln

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module hello function main = |args| { let message = "Hello, LyonJUG!” var a = 1 a = a + 1 display(message) display(">>> " + a) } local function display = |what| -> println(what)

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let data = [ [1, 2, 3], tuple[1, 2, 3], array[1, 2, 3], set[1, 2, 3, 3, 1], map[ ["a", 10], ["b", 20] ], vector[1, 2, 3], list[1, 2, 3] ] Tuples Arrays (JVM) LinkedHashSet LinkedHashMap ArrayList LinkedList

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println("http://google.com": toURL(): getContent(): readFully()) Augmentation on String Augmentation on InputStream

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struct Point = { x, y } augment Point { function moveBy = |this, dx, dy| { this: x(this: x() + dx) this: y(this: y() + dy) return this } } # struct Point{x=11, y=-4} println(Point(1, 1): moveBy(10, -5)) + toString, equals, hashCode

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https://unsplash.com/photos/i2KibvLYjqk Golo explorations (+ with Vert.x)

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https://unsplash.com/photos/sb7RUrRMaC4 Let’s talk about benchmarks…

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Baseline Java Clojure Golo Groovy JRuby Jython Nashorn ops/s 0 75000 150000 225000 300000 Zulu 1.8 GraalVM Trimorphic dispatch

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Baseline Java Clojure Golo Groovy JRuby Jython Nashorn ms/op 0 400 800 1200 1600 Zulu 1.8 GraalVM GCD (euclidian)

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Baseline Java Clojure Golo Groovy 0 75 150 225 300 Zulu 1.8 GraalVM

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Baseline Java (copy) Baseline Java (streams) Clojure Golo Groovy JRuby Nashorn us/s 0 175 350 525 700 Zulu 1.8 GraalVM filter/map/reduce

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Baseline Java (copy) Baseline Java (streams) Golo 0 15 30 45 60 GraalVM

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https://golo-lang.org/ Julien Ponge Philippe Charrière