Create PS1_Method_Overloading.md

Author: awsles

AZURE/PS1_Method_Overloading.md

@@ -0,0 +1,47 @@
+$method = @{ param([int32] $t) if ($t -ge 0) { return $this.substring($t)) } else { return $this.substring(($this.Length + $t)) } }	
+
+$mymethod = @{
+  MemberName = 'splice';
+  MemberType = 'ScriptMethod';
+  # Note the use of param() to define the method parameter and
+  # the use of $this to access the instance at hand.
+  Value      = { param([int32] $t) if ($t -ge 0) { return $this.substring($t)) } else { return $this.substring(($this.Length + $t)) } }	
+  Force      = $true
+}
+
+#
+# The following example defines a new .myLower() method and attaches it to strings
+#
+$mymethod = @{
+  MemberName = 'myLower';
+  MemberType = 'ScriptMethod';
+  # Note the use of param() to define the method parameter and
+  # the use of $this to access the instance at hand.
+  Value      = { param([int32] $t) $this.toLower() }	
+  Force      = $true
+}
+
+Update-TypeData -TypeName 'string' @mymethod
+
+
+
+#
+# Slice() https://github.com/PowerShell/PowerShell/issues/14533
+#
+# String slice()
+$stringMethod = @{
+  MemberName = 'slice';
+  MemberType = 'ScriptMethod';
+  Value      = { param([int32] $t) $( if ($t -ge 0) {$this.substring($t)} else {$this.substring(($this.Length + $t))}) }	
+  Force      = $true
+}
+Update-TypeData -TypeName 'string' @stringMethod
+
+# System.Array slice()
+$arrayMethod = @{
+  MemberName = 'slice';
+  MemberType = 'ScriptMethod';
+  Value      = { param($t) $this[$t] }	
+  Force      = $true
+}
+Update-TypeData -TypeName 'System.Array' @arrayMethod