Data commit

Task/Collections/PowerShell/collections-1.psh

@@ -0,0 +1,47 @@
+# Create an Array by separating the elements with commas:
+$array = "one", 2, "three", 4
+
+# Using explicit syntax:
+$array = @("one", 2, "three", 4)
+
+# Send the values back into individual variables:
+$var1, $var2, $var3, $var4 = $array
+
+# An array of several integer ([int]) values:
+$array = 0, 1, 2, 3, 4, 5, 6, 7
+
+# Using the range operator (..):
+$array = 0..7
+
+# Strongly typed:
+[int[]] $stronglyTypedArray = 1, 2, 4, 8, 16, 32, 64, 128
+
+# An empty array:
+$array = @()
+
+# An array with a single element:
+$array = @("one")
+
+# I suppose this would be a jagged array:
+$jaggedArray = @((11, 12, 13),
+                 (21, 22, 23),
+                 (31, 32, 33))
+
+$jaggedArray | Format-Wide {$_} -Column 3 -Force
+
+$jaggedArray[1][1] # returns 22
+
+# A Multi-dimensional array:
+$multiArray = New-Object -TypeName "System.Object[,]" -ArgumentList 6,6
+
+for ($i = 0; $i -lt 6; $i++)
+{
+    for ($j = 0; $j -lt 6; $j++)
+    {
+        $multiArray[$i,$j] = ($i + 1) * 10 + ($j + 1)
+    }
+}
+
+$multiArray | Format-Wide {$_} -Column 6 -Force
+
+$multiArray[2,2] # returns 33

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"
+}

Task/Collections/PowerShell/collections-3.psh

@@ -0,0 +1,9 @@
+$list = New-Object -TypeName System.Collections.ArrayList -ArgumentList 1,2,3
+
+# or...
+
+$list = [System.Collections.ArrayList]@(1,2,3)
+
+
+$list.Add(4) | Out-Null
+$list.RemoveAt(2)