Initial data commit

Task/Collections/PowerShell/collections-2.psh

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+# An empty Hash Table:
+$hash = @{}
+
+# A Hash table populated with some values:
+$nfcCentralDivision = @{
+    Packers = "Green Bay"
+    Bears   = "Chicago"
+    Lions   = "Detroit"
+}
+
+# Add items to a Hash Table:
+$nfcCentralDivision.Add("Vikings","Minnesota")
+$nfcCentralDivision.Add("Buccaneers","Tampa Bay")
+
+# Remove an item from a Hash Table:
+$nfcCentralDivision.Remove("Buccaneers")
+
+# Searching for items
+$nfcCentralDivision.ContainsKey("Packers")
+$nfcCentralDivision.ContainsValue("Green Bay")
+
+# A bad value...
+$hash1 = @{
+    One = 1
+    Two = 3
+}
+
+# Edit an item in a Hash Table:
+$hash1.Set_Item("Two",2)
+
+# Combine Hash Tables:
+
+$hash2 = @{
+    Three = 3
+    Four  = 4
+}
+
+$hash1 + $hash2
+
+# Using the ([ordered]) accelerator the items in the Hash Table retain the order in which they were input:
+$nfcCentralDivision = [ordered]@{
+    Bears   = "Chicago"
+    Lions   = "Detroit"
+    Packers = "Green Bay"
+    Vikings = "Minnesota"
+}