Tuple playground
Completed tuple playground
Adding optional playground
Added presentation slides
updated playgrounds
Updating playgrounds and presentation
Merge branch 'master' of https://github.com/viteinfinite/XebiaSwiftHandsOn
correction des Playground après dry run
.gitignore: on zap tout les xcuserdata
trou dans les exercises: Closure, Pattern.
Pas de Generic pour l'instant...
updated snippets
updated exercises
Merge branch 'master' into solution