If you want to eliminate completely empty array elements (and do not need to focus on empty properties), here are some approaches with fundamentally different performance:
# create huge array with empty elements $array = 1,2,3,$null,5,0,3,1,$null,'',3,0,1 $array = $array * 1000 # "traditional" approach (6 sec) Measure-Command { $newArray2 = $array | Where-Object { ![string]::IsNullOrWhiteSpace($_) } } # smart approach (0.03 sec) Measure-Command { $newArray3 = foreach ($_ in $array) { if (![String]::IsNullOrWhiteSpace($_)){ $_} } }
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