# HG changeset patch
# User IBBoard <dev@ibboard.co.uk>
# Date 1504641621 -3600
# Node ID 25e66d77e1fe5971edd25a31eaacca303bdd7c69
# Parent  2ea3b5e9b41b4b94341f5783e708e249860ee236
Start the Day 1 excercises for Io and document the interactive stuff

diff -r 2ea3b5e9b41b -r 25e66d77e1fe 2-Io/day1.io
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/2-Io/day1.io	Tue Sep 05 21:00:21 2017 +0100
@@ -0,0 +1,23 @@
+# Calling "functions" is sending a "message" (right) to an object (left)
+# ↓ object  ↓ message
+"Hi ho, Io" print
+
+# Object creation is by cloning and modifying root "Object" object
+# Convention appears to be that classes start with capitals
+Vehicle := Object clone
+
+# ":=" creates a "slot" (which can be a value or a function?), whereas "=" assigns to existing ones
+Vehicle description := "A description of our vehicle"
+# So this would fail because the slot doesn't exist - we'll repeat it at the end to stop it crashing our program too early!
+# Vehicle another_field = "This won't work"
+
+# Fetching values is just calling the function (but we need an extra "print" to print to stdout)
+Vehicle description print
+
+# In addition to the slot we created, there is a default slot called "type"
+# (and presumably some default messages, because slotNames apparently isn't a slot!)
+Vehicle slotNames print
+Vehicle type print
+Object type print
+
+Vehicle another_field = "This won't work"
\ No newline at end of file