PowerShell: comma operator

The binary comma operator is used to create arrays:

$ary = $elem_one, $elem_two, $elem_three

There is also a unary comma operator which creates an array with one element only. Note that the comma needs to be placed before the element:

$ary = ,42

The unary comma operator might be used, for example, in functions to return arrays (such as byte arrays).

operators