‫PowerShell 7.x - قسمت پنجم - اسکریپت بلاک و توابع

PS /> [Parameter]::new()
ExperimentName :
ExperimentAction : None
Position : -2147483648
ParameterSetName : __AllParameterSets
Mandatory : False
ValueFromPipeline : False
ValueFromPipelineByPropertyName : False
ValueFromRemainingArguments : False
HelpMessage :
HelpMessageBaseName :
HelpMessageResourceId :
DontShow : False
TypeId : System.Management.Automation.ParameterAttribute

Function Ping-Website { [CmdletBinding()] Param( [Parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidatePattern('^www..*')] [string[]]$Websites, [ValidateRange(1, 3)] [int]$Count = 3 ) $Results = @() $Websites | ForEach-Object { $Website = $_ $Result = Test-Connection -ComputerName $Website -Count $Count -Quiet $ResultText = $Result ? 'Success' : 'Failed' $Results += @{ Website = $Website Result = $ResultText } Write-Verbose "The result of pinging $Website is $ResultText" } $Results | ForEach-Object { $_ | Select-Object @{ Name = "Website"; Expression = { $_.Website }; }, @{ Name = "Result"; Expression = { $_.Result }; }, @{ Name = "Number Of Attempts"; Expression = { $Count }; } }
}

Function Ping-Website { [CmdletBinding()] Param( [Parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidateScript({ If (-Not ($_ | Test-Path) ) { Throw "File or folder does not exist" } If (-Not ($_ | Test-Path -PathType Leaf) ) { Throw "The Path argument must be a file. Folder paths are not allowed." } If ($_ -NotMatch "(.json)$") { throw "The file specified in the path argument must be either of type json" } Return $true })] [Alias("src", "source", "file")] [System.IO.FileInfo]$Path, [int]$Count = 1 ) $Results = [System.Collections.ArrayList]@() $Urls = Get-Content -Path $Path | ConvertFrom-Json $Urls | ForEach-Object -Parallel { $Website = $_.url $Result = Test-Connection -ComputerName $Website -Count $using:Count -Quiet $ResultText = $Result ? 'Success' : 'Failed' $Item = @{ Website = $Website Result = $ResultText } $null = ($using:Results).Add($Item) } $Results | ForEach-Object -Parallel { $_ | Select-Object @{ Name = "Website"; Expression = { $_.Website }; }, @{ Name = "Result"; Expression = { $_.Result }; }, @{ Name = "Number Of Attempts"; Expression = { $using:Count }; } }
}

Function Ping-Website { [CmdletBinding()] Param( # As before ) # As before $Urls | ForEach-Object -Parallel { $DebugPreference = $using:DebugPreference $VerbosePreference = $using:VerbosePreference $InformationPreference = $using:InformationPreference # As before } # As before
}

$scriptBlock = { $logOutput = { param($message) Write-Host $message } [int]$someVariable = 10 $doSomeWork = { & $logOutput -message "Some variable value: $someVariable" } $someVariable = 20 & $doSomeWork
}

$scriptBlock = { $logOutput = { param($message) Write-Host $message } [int]$someVariable = 10 $doSomeWork = { & $logOutput -message "Some variable value: $someVariable" }.GetNewClosure() $someVariable = 20 & $doSomeWork
}

PS /> "www.google.com", "www.yahoo.com" | Ping-Website
Website Result Number Of Attempts
------- ------ ------------------
www.yahoo.com Success 3