2016 Update

Task/Extend-your-language/PowerShell/extend-your-language-1.psh

@@ -0,0 +1,47 @@
+function When-Condition
+{
+    [CmdletBinding()]
+    Param
+    (
+        [Parameter(Mandatory=$true, Position=0)]
+        [bool]
+        $Test1,
+
+        [Parameter(Mandatory=$true, Position=1)]
+        [bool]
+        $Test2,
+
+        [Parameter(Mandatory=$true, Position=2)]
+        [scriptblock]
+        $Both,
+
+        [Parameter(Mandatory=$true, Position=3)]
+        [scriptblock]
+        $First,
+
+        [Parameter(Mandatory=$true, Position=4)]
+        [scriptblock]
+        $Second,
+
+        [Parameter(Mandatory=$true, Position=5)]
+        [scriptblock]
+        $Neither
+    )
+
+    if ($Test1 -and $Test2)
+    {
+        return (&$Both)
+    }
+    elseif ($Test1 -and -not $Test2)
+    {
+        return (&$First)
+    }
+    elseif (-not $Test1 -and $Test2)
+    {
+        return (&$Second)
+    }
+    else
+    {
+        return (&$Neither)
+    }
+}

Task/Extend-your-language/PowerShell/extend-your-language-2.psh

@@ -0,0 +1,6 @@
+When-Condition -Test1 (Test-Path .\temp.txt) -Test2 (Test-Path .\tmp.txt) `
+    -Both { "both true"
+}   -First { "first true"
+}   -Second { "second true"
+}   -Neither { "neither true"
+}

Task/Extend-your-language/PowerShell/extend-your-language-3.psh

@@ -0,0 +1,8 @@
+Set-Alias -Name if2 -Value When-Condition
+
+if2 $true $false {
+    "both true"
+} { "first true"
+} { "second true"
+} { "neither true"
+}