Object/Object.ps1

#region Copyright & License

# Copyright © 2012 - 2020 François Chabot
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#endregion

Set-StrictMode -Version Latest

<#
.SYNOPSIS
    Use and dispose of an object that supports IDisposable.
.DESCRIPTION
    Like the C# using statement, dispose an object after usage that supports IDisposable.
.PARAMETER Object
    The object to use and to be disposed of afterwards.
.PARAMETER Process
    The script block that exercises the object to be disposed of afterwards.
.EXAMPLE
    Using-Object ($streamWriter = New-Object System.IO.StreamWriter("some-file.txt")) {
        $streamWriter.WriteLine('some content.')
    }
.NOTES
    Notice that, unlike in its original source mentionned below, the function is called 'Use-Object', which does
    rely on an approved PowerShell verb, and not 'Using-Object', which does not. See
    https://davewyatt.wordpress.com/2014/04/11/using-object-powershell-version-of-cs-using-statement/
#>

function Use-Object {
    [CmdletBinding()]
    [OutputType([void])]
    param (
        [Parameter(Mandatory = $true)]
        [AllowEmptyString()]
        [AllowEmptyCollection()]
        [AllowNull()]
        [System.IDisposable]
        $Object,

        [Parameter(Mandatory = $true)]
        [scriptblock]
        $Process
    )
    Resolve-ActionPreference -Cmdlet $PSCmdlet -SessionState $ExecutionContext.SessionState
    try {
        . $Process
    } finally {
        if ($null -ne $Object) {
            $Object.Dispose()
        }
    }
}

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