powershell - 如何遍历哈希表，该哈希表包含具有键，值的多个数组，并附加另一个字符串？

Question

我有一个具有以下结构的哈希表，

$testHsh = @{2 = (1,3);3 = (2,4,6)}

我正在尝试迭代上述哈希表，并希望将字符串“testmachine-”与keys(2＆3)的值连接起来，并试图将值保存在另一个哈希表中，如下所示，

$tm = @{2 = (testmachine-1,testmachine-3,testmachine-5);3 = (testmachine-2,testmachine-4,testmachine-6)}

这是我实现目标的代码，

$teststr= "testmachine-"
$testInfo = $null
$machineHash = @{}
foreach ($ts in $testHsh.Count) {
    $testInfo = @()
    for($i=0;$i -lt $ts.Values;$i = $i+1) {
    $testInfo += @($teststr+ $ts)
    Write-Output $testInfo
    }
    $testInfoSet = @{$ts = $testInfo}
    $testInfoObj = New-Object psobject -Property $testInfoSet
    $machineHash = $testtInfoObj
}

Write-Output $machineHash

请提出实现我的目标的最佳方法!提前致谢

Answer 1

$testHsh.Count是一个整数，不是可以迭代的集合。
相反，您需要在源哈希表上调用GetEnumerator():

# define source hashtable 
$testHsh = @{2 = (1,3,5);3 = (2,4,6)}

# define new destination hashtable 
$machineHash = @{}

# loop over each name-value entry in $testHsh
foreach($entry in $testHsh.GetEnumerator()){
  # Assign to the same key in the destination hash, an array of the values from the source, but modified
  $machineHash[$entry.Name] = @(
    # prefix all values from source hash entry with "testmachine-"
    $entry.Value |ForEach-Object {
        "testmachine-${_}"
    }
  )
}

$machineHash