From 5fd1f01eef60e94523f8740a08d5339ce78c9bc0 Mon Sep 17 00:00:00 2001
From: Laurent Modolo <laurent.modolo@ens-lyon.fr>
Date: Mon, 4 Oct 2021 15:15:58 +0200
Subject: [PATCH] CONTRIBUTING.md: update for session_3 and add for session_4

---
 CONTRIBUTING.md | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f6b5a40..041a296 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -11,5 +11,14 @@
 - Add summary of all code used in the session at the end of the sesssion
 - Write the WDI.Rmd training which will be for a later session
 - Write tuto to create IFB accout and launch Rstudio server
-- Write session_3/exel.Rmd to load an exel version of the mpg data
-- Write session_3/ggannimate.Rmd https://exts.ggplot2.tidyverse.org/gallery/ or another example of ggplot2 addons 
\ No newline at end of file
+- Add sup training on the floating point problem for session_4 : 
+
+```
+x <- sqrt(2) ^ 2
+x
+#> [1] 2
+x == 2
+FALSE
+```
+
+Use `dplyr::near()` instead
\ No newline at end of file
-- 
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