comparison operator in switch statement

switch-compare-op.ps1

$size = $(get-item .\Rootstore.sst).Length
Write-Host "Size $size"
switch ($size) {
    ($_ -gt 30000000000) {$foo = "reallybig" ;break}    
    ($_ -lt 25000000000) {$foo = "size5" ;break}
    ($_ -lt 20000000000) {$foo = "size4" ;break}
    ($_ -lt 15000000000) {$foo = "size3" ;break}
    ($_ -lt 10000000000) {$foo = "size2" ;break}
    ($_ -lt 5000000000) {$foo = "size1" ;break}
}

Write-Host "the file is: $foo"