Public/New-ExpressionCacheKey.ps1
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<#
.SYNOPSIS Generates a stable cache key from a ScriptBlock and its arguments. .DESCRIPTION Creates a deterministic key (hash) that changes when the ScriptBlock content or the supplied Arguments change. Argument order matters. .PARAMETER ScriptBlock The ScriptBlock used to compute the value. .PARAMETER Arguments Arguments that will be passed to the ScriptBlock when computing the value. .OUTPUTS System.String .EXAMPLE $sb = { param($x,$y) $x + $y } New-ExpressionCacheKey -ScriptBlock $sb -Arguments 1,2 #> function New-ExpressionCacheKey { [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSUseShouldProcessForStateChangingFunctions', '', Justification = 'Private helper; Does not execute ScriptBlock.')] param( [Parameter(Mandatory)] [scriptblock]$ScriptBlock, [object[]]$Arguments ) $src = ($ScriptBlock.ToString() -split "`r?`n" | ForEach-Object { $_.Trim() }) -join ' ' $Arguments = if ($Arguments) { ($Arguments | ConvertTo-Json -Depth 5) } else { '' } "$src|$Arguments" | Get-ExpressionCacheHash } |