LawrenceHwang

function GeneratePesterTest
{
    # Generate Pester tests from PSCustomObject's NoteProperty
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [PSCustomObject]$InputObject,

        #The object name that you are comparing with in your test.

LawrenceHwang

PowerShell 動詞 (PowerShell Approved Verbs)	繁體中文譯 (Meaning in Traditional Chinese)
Add	加入
Clear	清除
Close	關閉
Copy	複製
Enter	輸入
Exit	退出
Find	尋找
Format	格式

LawrenceHwang

# Code snippets to tranlate PowerShell approved verbs into different language using AWS Translate
# This snippet assumes the AWS credential and AWS default regions have been set.
# Also, make sure your console environment supports the target encoding.

$Verb = (Get-Verb).Verb

# Find Language code here:
# https://docs.aws.amazon.com/powershell/latest/reference/items/ConvertTo-TRNTargetLanguage.html
$SourceLanguageCode = 'en'
$TargetLanguageCode = 'zh-TW'

LawrenceHwang

function Get-LifeCalendar {

    [CmdletBinding()]
    Param(
        $StartDate = (Get-Date -Date '1980-01-01'),
        $LifeinYear = 75
    )
    # A powershell function to display the life calendar in weeks.
    # Original idea from: https://waitbutwhy.com/2014/05/life-weeks.html
    $DaysSinceStartDate = (New-TimeSpan -Start $StartDate -End (Get-Date)).Days

LawrenceHwang

$InterfaceAlias = 'Wi-Fi'

while ((Get-NetIPAddress -InterfaceAlias $InterfaceAlias -AddressFamily IPv4).IPAddress -like '169*')
{
    $arg = '/C ipconfig /renew'
    Start-Process -FilePath 'cmd.exe' -argumentlist $arg -wait -PassThru
    Start-Sleep -Seconds 3
}

LawrenceHwang

function Invoke-BetterWebRequest {
  [CmdletBinding()]
  param(
    # Hashtable for the Invoke-WebRequest
    [Parameter(Mandatory = $true, ValueFromPipeline = $true, Position = 0)]
    [hashtable]
    $iwrSplat
  )

  try {

LawrenceHwang

# This is iteration
9:42 PM> Measure-Command -Expression {FibI 20}
...
TotalSeconds      : 0.0093811
TotalMilliseconds : 9.3811

# This is recursion
9:43 PM> Measure-Command -Expression {FibR 20}
...
TotalSeconds      : 22.7287975

LawrenceHwang

# Fibonacci - Recursion

Function FibR {
  [CmdletBinding()]

  [Parameter(Position = 0)]
  param ([int]$index)

  Set-StrictMode -Version Latest
  if ($index -lt 2) {

LawrenceHwang

# Fibonacci - Interation

Function FibI {
  [CmdletBinding()]

  [Parameter(Position = 0)]
  param ([int]$index)

  Set-StrictMode -Version Latest
  if ($index -eq 0) {

LawrenceHwang

Credit: Mark Kraus
Website: https://get-powershellblog.blogspot.com

Collection Type Guidence

When to use what

• Use Arrays if you know the element types and have a fixed length and/or known-up-front collection size that will not change.
• Use ArrayList if you have an unkown collection size with either unknown or mixed type elements.
• Use a Generic List when know the type of the elements but not the size of the collection.
• Use a HashTable if you are going to do key based lookups on a collection and don't know the object type of the elements.
• Use a Dictionary<TKey, TValue> you are going to do key based lookups on a collection and you know the type of the elements.
• Use a HashSet when you know the type of elements and just want unique values and quick lookups and assignmnets.