Make fewer copies of arrays #509

	name: Windows build
	on: [push, pull_request]
	jobs:
	msbuild:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	vsversion: [2019, 2022]
	unity: [unity, singles]
	include:
	- vsversion: 2019
	os: windows-2019
	boost_version: 77
	- vsversion: 2022
	os: windows-2022
	boost_version: 85
	steps:
	- uses: actions/checkout@v4
	- name: Setup MSVC++ environment
	uses: ilammy/msvc-dev-cmd@v1
	with:
	arch: x64
	vsversion: ${{ matrix.vsversion }}
	- name: Setup Boost
	run: \|
	$Url = "https://boostorg.jfrog.io/artifactory/main/release/1.${{ matrix.boost_version }}.0/source/boost_1_${{ matrix.boost_version }}_0.zip"
	(New-Object System.Net.WebClient).DownloadFile($Url, "$RUNNER_TEMP\boost.zip")
	Expand-Archive -Path "$RUNNER_TEMP\boost.zip" -DestinationPath C:\local
	Rename-Item -Path "C:\local\boost_1_${{ matrix.boost_version }}_0" -NewName "boost"
	- name: Setup local properties
	shell: cmd
	run: \|
	COPY .ci\VS${{ matrix.vsversion }}.props .\Build.props
	- name: Setup unity build
	if: ${{ matrix.unity == 'unity' }}
	shell: cmd
	run: \|
	COPY .ci\Unity.props .\Directory.Build.props
	- name: Build
	run: \|
	msbuild ./QuantLib.sln /verbosity:normal /property:Configuration=Release /property:Platform=x64
	- name: Test
	run: \|
	.\test-suite\bin\QuantLib-test-suite*.exe --log_level=message
	- name: Run examples
	run: \|
	foreach ($file in Get-ChildItem -Path .\Examples\*.exe -Recurse)
	{
	& $file.FullName
	if (!$?) { Exit $LASTEXITCODE }
	}

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