started ch05

exercises/ch05/ex5_1.lua

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+local sunday = "monday"; monday = "sunday"
+local t = {sunday = "monday", [sunday] = monday}
+print(t.sunday, t[sunday], t[t.sunday])

exercises/ch05/ex5_3.lua

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+local escape_sequences = {
+    ["\a"] = "bell",
+    ["\b"] = "back space",
+    ["\f"] = "form feed",
+    ["\n"] = "newline",
+    ["\r"] = "carriage return",
+    ["\t"] = "horizontal tab",
+    ["\v"] = "vertical tab",
+    ["\\"] = "backslash",
+    ["\""] = "double quote",
+    ["\'"] = "single quote"
+}
+
+for k, v in pairs(escape_sequences) do
+    print(("k='%s', v='%s'"):format(k, v))
+end