update session7

session_7/session_7.Rmd

 ---
 title: "R.7: String & RegExp"
 author: "Laurent Modolo [laurent.modolo@ens-lyon.fr](mailto:laurent.modolo@ens-lyon.fr)"
-date: "2021"
+date: "2022"
 output:
   rmdformats::downcute:
     self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
-    css: "http://perso.ens-lyon.fr/laurent.modolo/R/src/style.css"
+    css: "../www/style_Rmd.css"
 ---
 
+```{r include=FALSE}
+library(fontawesome)
+``` 
+
+ `r fa(name = "fas fa-house", fill = "grey", height = "1em")`  https://can.gitbiopages.ens-lyon.fr/R_basis/
+
+
 ```{r setup, include=FALSE}
 rm(list=ls())
 knitr::opts_chunk$set(echo = TRUE)
@@ -139,6 +146,13 @@ You need to install the `htmlwidgets` packages to use these functions
 
 <details><summary>Solution</summary>
 <p>
+
+```{r install_htmlwidgets, eval=T, message=F, include=F, echo=F}
+if (! require("htmlwidgets")) {
+  install.packages("htmlwidgets")
+}
+```
+
 ```{r load_htmlwidgets, eval=T, message=F}
 library(htmlwidgets)
 ```
@@ -429,4 +443,4 @@ sentences %>%
   str_split("\\s")
 ```
 
-## See you in [R.8: Factors](http://perso.ens-lyon.fr/laurent.modolo/R/session_8/)
+## See you in [R.8: Factors](https://can.gitbiopages.ens-lyon.fr/R_basis/session_8/)
\ No newline at end of file