Remove duplicate values from array and convert object into title case

Question

I wont to go though a array and remove any object/value which is duplicated in the array.

I try this code the convert the string into array

$a = "a,b,a,c,d,a,g,G,h,A,,,,"
$option = [System.StringSplitOptions]::RemoveEmptyEntries
$a= $a.Split(",", $option);
$a= $TextInfo.ToTitleCase($a.Trim())

Then I use following to remove any values which is duplicated

$a = $a | Select-Object -Unique

Which is hit and miss on some list, its working for some list but then for some it doesn't.

Would like to have a array with no duplicate values

Theo · Accepted Answer · 2020-09-13 15:08:09Z

1

You could do this:

$a = "a,b,a,c,d,a,g,G,h,A,,,," -split ',' | 
    Where-Object { $_ -match '\S' } |
    ForEach-Object {(Get-Culture).TextInfo.ToTitleCase($_.Trim())} | 
    Select-Object -Unique

$a

Output:

A
B
C
D
G
H

answered Sep 13, 2020 at 15:08

Theo

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1 Comment

maj Over a year ago

It looks like if I use this approached it works stackoverflow.com/questions/16153609/…

RoadRunner · Accepted Answer · 2020-09-13 15:10:52Z

0

You could convert your split array to uppercase with ToUpper() before getting unique values:

❯ $a = "a,b,a,c,d,a,g,G,h,A,,,,"
❯ $option = [System.StringSplitOptions]::RemoveEmptyEntries
❯ $a.Split(",", $option).ToUpper() | Select-Object -Unique
A
B
C
D
G
H

answered Sep 13, 2020 at 15:10

RoadRunner

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