Beating Hadoop with Posh

output

  Black   White     Tie RunTime
  -----   -----     --- -------
2853633 3762820 3260741 6 minutes, 45 seconds, 347 milliseconds

parse.ps1

# http://foxdeploy.com/2016/03/01/powershell-challenge-beating-hadoop-with-posh/
# Most of the code is output formatting; the processing is a one-liner with v1 cmdlets
$start = [DateTime]::Now
$results = Get-ChildItem C:\Temp\ChessData-master -Recurse -filter *.pgn | Select-String -Pattern "Result" | Group-Object Line -NoElement 

$black = $results.Where({$_.Name -eq '[Result "0-1"]'}) | Select-Object -ExpandProperty Count
$white = $results.Where({$_.Name -eq '[Result "1-0"]'}) | Select-Object -ExpandProperty Count
$tie = $results.Where({$_.Name -eq '[Result "1/2-1/2"]'}) | Select-Object -ExpandProperty Count
[PSCustomObject]@{Black=$black; White=$white; Tie=$tie; RunTime=([DateTime]::Now - $start)} | Write-Output