Scripts from my PowerShell talk

Get-WeatherForecast.ps1

function Get-WeatherForecast {
    <# 
    .SYNOPSIS 
        Gets the weather forecast for a location of choice.
    .DESCRIPTION 
        Displays the weather forecast for a location of choice, directly in
        the terminal. Powered by wttr.in.
    .NOTES 
        Author: Tormod Fjeldskår 
    .EXAMPLE 
        Get-WeatherForecast Oslo
        Shows the weather forecast for Oslo, Norway.
    .EXAMPLE
        Get-WeatherForecast -Location Stavanger -Wind mps -Days 2
        Shows the 2 day weather forecast for Stavanger, Norway with wind
        speeds in meters per second.
    .PARAMETER Location 
       The location for which to get the forecast
    .PARAMETER Wind 
       The unit of measure for wind speeds (mps = m/s, kph = km/h)
    .PARAMETER Days
        The number of days between 0 and 3 for which to get the forecast
    .PARAMETER Narrow
        If set, only day and night forecasts are provided
    .PARAMETER Quiet
        If set, no location information is provided
    #> 

    param (
        [Parameter(Mandatory=$true, ValueFromPipeline=$true)]
        [ValidatePattern("^[a-zA-Z]+$")]
        [string] $Location,

        [ValidateSet("mps", "kph")]
        [string] $Wind = "mps",

        [ValidateRange(0,3)]
        [int] $Days = 3,

        [switch] $Narrow,

        [switch] $Quiet
    )

    $options = ''

    if ($Wind -eq "mps") { $options += "M" }
    if ($Wind -eq "kph") { $options += "m" }

    if ($Days -eq 0) { $options += "0" }
    if ($Days -eq 1) { $options += "1" }
    if ($Days -eq 2) { $options += "2" }

    if ($Narrow) { $options += "n" }
    if ($Quiet) { $options += "Q" }

    $url = "http://wttr.in/{0}?{1}" -f $Location, $options
    $response = Invoke-WebRequest $url -UserAgent curl

    Write-Output $response.Content
}

Microsoft.PowerShell_profile.ps1

Import-Module PSColor
Import-Module posh-git
Import-Module oh-my-posh

Set-Theme Agnoster

Modules.ps1

Install-Module -Scope CurrentUser PSColor
Install-Module -Scope CurrentUser posh-git
Install-Module -Scope CurrentUser oh-my-posh

Samples-GDP.ps1

$gdp = Import-Csv gdp.csv

$gdp | ? { $_."Country Code" -eq "NOR" }
$gdp | select "Country Name", "Country Code", "2018"
$gdp | select "Country Name", "Country Code", {$_."2018" -as [int]}
$gdp | select "Country Name", "Country Code", @{Name="GDP"; Expression={$_."2018" -as [int]}}
$gdp | select "Country Name", "Country Code", @{Name="GDP"; Expression={$_."2018" -as [int]}} | sort "GDP" -Descending
$gdp | select "Country Name", "Country Code", @{Name="GDP"; Expression={$_."2018" -as [int]}} | sort "GDP" -Descending | select -First 5