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+---
+layout: post
+title:  "PSUG #101 - Much Ado About Testing and fast stack-safe functional code"
+categories: scala
+---
+
+Bonjour à tou•te•s
+
+Pour ce meetup pré [Scala IO](scala.io), Ebiznext nous accueille pour parler de tests métamorphiques et de programmation fonctionnelle stack-safe et performante avec un retour d'expérience d'une librairie de batch.
+
+-----------
+## Much Ado About Testing — Nicolas Rinaudo
+
+Testing is a wide field, with lots of weird concepts not much discussed in the industry.
+
+This talk means to introduce:
+
+* example based testing and how it falls short
+* property based testing (PBT) and strategies to identify useful properties
+* metamorphic testing for when PBT is too expensive
+
+-----------
+## 10 tips to write fast stack-safe functional code in Scala: the automatic-batching library experience report — Christophe Calvès
+
+Have you ever heard the belief of functional programming being slow?
+
+Have you ever been caught by a StackOverflowError in your recursive functions?
+
+Have you ever rewritten your functional code into imperative style to make it fast and stack-safe?
+
+What if i told you how to write fast and stack-safe functional code? Even for non tail-recursive functions! ;) In this talk i'll present you 10 tips to write fast and stack-safe functional code. It is based on my experience implementing [Auto-Batch](https://github.com/chrilves/auto-batch), a pure functional-programming Scala library to automatically batch API calls.