Variables 变量扩展和转义字符

在PowerShell中，您可以展开字符串中的变量，如下所示：

$myvar = "hello"
$myvar1 = "$myvar`world" #without the `, powershell would look for a variable called $myvarworld
Write-Host $myvar1 #prints helloworld

$myvar3 = "$myvar`albert"
Write-Host $myvar3 #prints hellolbert as `a is an alert 

我遇到的问题是转义字符，如

n

r等，如下所示：

$myvar = "hello"
$myvar1 = "$myvar`world" #without the `, powershell would look for a variable called $myvarworld
Write-Host $myvar1 #prints helloworld

$myvar3 = "$myvar`albert"
Write-Host $myvar3 #prints hellolbert as `a is an alert 

此外，以下各项也不起作用：

$myvar2 = "$myvar`frank" #doesnt work
Write-Host $myvar2 #prints hellorank.

问题: 在使用自动变量扩展功能时，如何组合字符串而不用担心转义字符？ 或者我只能这样做：

$myvar = "hello"
$myvar1 = "$myvar"+"world" #using +
Write-Host $myvar1
$myvar2 = "$myvar"+"frank" #using +

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另一个选项是通过format操作符：

"{0}world" -f $myvar

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另一个选项是双引号字符串：

$myvar = "Hello"
$myvar2 = @"
$myvar$("frank")
"@

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这似乎有点笨拙，但作为另一种选择，您可以添加空格和退格：

$myvar = "hello"
$myvar1 = "$myvar `bworld"
$myvar1

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这种方式尚未提及：

"$($myvar)frank"

这是：

"${myvar}frank"

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另一种选择是将变量表达式包装为$（）：

就因为“${myvar}frank”在我看来是最干净的