Question

我有以下代码示例。我只是想从哈希表键中打印值。

function New-Article()
{
  param ($volume, $issue, $title)

  $article = @{}
  $article.volume = $volume
  $article.issue = $issue
  $article.title = $title

  return $article
}

$article = New-Article(1, 2, "Article Title")
Write-Host "Article title: $article.title" # Output = Article title: System.Collections.Hashtable.title
Write-Host "Article title: $($article.title)" # Output = Article title: 
Write-Host "Article volume: $($article.volume)" # Output = Article volume: 1 2 Article Title

$article = New-Article 1, 2, "Article Title"
Write-Host "Article title: $($article.title)" # Output = Article title:

编辑添加了一行代码来测试可能重复项中的内容（与属性有关，而不是哈希表）

编辑添加了更多基于评论和答案的示例

Answer 1

您有2个问题。除了将哈希表属性访问表达式括在$（）中之外，您还错误地调用了该函数。在powershell中，参数传递给一个用空格分隔的函数，不带括号：

function New-Article()
{
  param ($volume, $issue, $title)

  $article = @{}
  $article.volume = $volume
  $article.issue = $issue
  $article.title = $title

  return $article
}

$article = New-Article 1 2 "Article Title"
Write-Host "Article title: $($article.title)"

在Powershell中从哈希表打印值

1 个答案: