Mastering Windows PowerShell Scripting - Second Edition

Named capture groups

Capture groups can be given names. The name must be unique within the regular expression.

The following syntax is used to name a group:

(?<GroupName>Expression) 

This may be applied to the simple previous example:

PS> 'first second third' -match '(?<One>first) (?<Two>second) (?<Three>third)'; $matchesTrueName                             Value ----                             ----- One                              first Three                            third Two                              second 0                                first second third 

In PowerShell, this adds a pleasant additional capability. If the goal is to tear apart text and turn it into an object, one approach is as follows:

if ('first second third' -match '(first) (second) (third)') { 
    [PSCustomObject]@{ 
        One   = $matches[1] 
        Two   = $matches[2] 
        Three = $matches[3] 
    } 
} 

This produces an object that contains the result of each ...