Differences

This shows you the differences between two versions of the page.

--- powershell:qnd:powershell [2023/01/27 23:22] – [Loops/Iteration] mgupton
+++ powershell:qnd:powershell [2024/10/24 14:24] (current) – [Select Objects] mgupton
@@ Line 35: / Line 35: @@
 </code>
-===== Data Types =====
+====== Data Types ======
   * Use ''$var.GetType()'' to get data type of variable
   * [[https://docs.microsoft.com/en-us/powershell/scripting/learn/deep-dives/everything-about-hashtable|hashtables]]
@@ Line 50: / Line 50: @@
 </code>
+<code powershell>
+$foo = @(
+       "alpha"
+       "beta"
+       "gamma"
+       )
+</code>
 ==== hash table ====
 <code powershell>
@@ Line 63: / Line 70: @@
   * If a variable name contains spaces it needs to be wrapped in quotes (e.g. ''$obj."First Name"'' or ''{}''. This might happen with imported CSV data, for example.
-===== Control Structures =====
+====== Control Structures ======
-===== Loops/Iteration =====
+====== Loops/Iteration ======
 ==== For Loop ====
 <code powershell>
 $fruit = @('apple','pear','banana','lemon','lime','mango')
@@ Line 91: / Line 97: @@
 ==== Hash Table ====
-  * To loop over the items in a hash table you have to call ''GetEnumerator()'' on the hash table.
+  * To loop over the items in a hash table one option is to call ''GetEnumerator()'' on the hash table.
+<code powershell>
+$t1 = @{firstname = "Michael"; lastname = "Muse"}
+foreach ($i in $t1.GetEnumerator()) {
+    $i.value
+}
+</code>
+=== Alternatively use the keys ===
+<code powershell>
+$t1 = @{firstname = "Michael"; lastname = "Muse"}
+foreach ($i in $t1.keys) {
+    $t1[$i]
+}
+</code>
 ====== Select-String ======
@@ Line 107: / Line 131: @@
 Example of getting just the first item of the listed output
 <code powershell>
-ls | select first 1
+ls | select -first 1
 </code>