Removing Empty Array Elements (Part 2)

by Feb 7, 2019

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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