Prepend folder name to paths in an array

Question

I'm looking to prepend a folder name to the start of an array of (relative) paths using a foreach statement, but it's not making any changes to the array (no errors either)

Note: This is more for educational purposes than functional as I have it working using a for loop which I've commented out, but I'm interested in learning how the foreach statement works

$myFiles = @(
    "blah1\blah2\file1.txt"
    "blah3\blah4\file2.txt"
    "blah5\blah6\file3.txt"
)

$checkoutFolder = "folder1"

#for ($h = 0; $h -lt $myFiles.Length; $h++) {
#$myFiles[$h] = $checkoutFolder + "\" + $myFiles[$h]
#}

foreach ($path in $myFiles) {
$path = $checkoutFolder + "\" + $path
}

$myFiles

I also tried using a buffer variable e.g.

$buffer = $checkoutFolder + "\" + $path
$path = $buffer

But same result i.e. OUTPUT:

blah1\blah2\file1.txt
blah3\blah4\file2.txt
blah5\blah6\file3.txt

Answer 1

I could think of two ways:

Create new array with modified data of old array

$myFiles = @(
            "blah1\blah2\file1.txt"
            "blah3\blah4\file2.txt"
            "blah5\blah6\file3.txt"
            )
$checkoutFolder = "folder1"

#Create new array $myFilesnew
$myFilesnew = @()
#For each line in in old array
foreach ($file in $myFiles)
{
#Create new row from modied row $file of $myFiles array
$row = $checkoutFolder+"\"+$file
#Add row $row to a new array $myFilesnew
$myFilesnew+=$row
}

$myFilesnew

Modify each row of existing array:

$myFiles = @(
            "blah1\blah2\file1.txt"
            "blah3\blah4\file2.txt"
            "blah5\blah6\file3.txt"
            )
$checkoutFolder = "folder1"

$i=0
while($i-lt $myFiles.Count)
    {
     #Get $i row $myFiles[$i] from aray, perform insert of modified data, write data back to $myFiles[$i] row of the array
     $myfiles[$i]=$myFiles[$i].Insert(0,$checkoutFolder+"\");
     #Add +1 to $i
     $i++

        }
$myFiles