有没有办法在哈希表中保持键的添加顺序?就像一个推送/弹出机制。
示例:
$hashtable = @{}
$hashtable.Add("Switzerland", "Bern")
$hashtable.Add("Spain", "Madrid")
$hashtable.Add("Italy", "Rome")
$hashtable.Add("Germany", "Berlin")
$hashtable
我希望保留将元素添加到哈希表的顺序。
发布于 2013-02-15 17:02:45
PowerShell V1 / V2中没有内置的解决方案。您将需要使用.NET System.Collections.Specialized.OrderedDictionary
$order = New-Object System.Collections.Specialized.OrderedDictionary
$order.Add("Switzerland", "Bern")
$order.Add("Spain", "Madrid")
$order.Add("Italy", "Rome")
$order.Add("Germany", "Berlin")
PS> $order
Name Value
---- -----
Switzerland Bern
Spain Madrid
Italy Rome
Germany Berlin
在PowerShell V3中,您可以强制转换为ordered
PS> [ordered]@{"Switzerland"="Bern"; "Spain"="Madrid"; "Italy"="Rome"; "Germany"="Berlin"}
Name Value
---- -----
Switzerland Bern
Spain Madrid
Italy Rome
Germany Berlin
发布于 2013-02-15 17:01:11
您可以改用有序字典:
如下所示:
$list = New-Object System.Collections.Specialized.OrderedDictionary
$list.Add("Switzerland", "Bern")
$list.Add("Spain", "Madrid")
$list.Add("Italy", "Rome")
$list.Add("Germany", "Berlin")
$list
发布于 2015-04-10 08:52:22
可以在添加元素时提供一个连续的键:
$hashtable = @{}
$hashtable[$hashtable.count] = @("Switzerland", "Bern")
$hashtable[$hashtable.count] = @("Spain", "Madrid")
$hashtable[$hashtable.count] = @("Italy", "Rome")
$hashtable[$hashtable.count] = @("Germany", "Berlin")
$hashtable
然后,您可以获得按键排序的元素:
echo "`nHashtable keeping the order as they were added"
foreach($item in $hashtable.getEnumerator() | Sort Key)
{
$item
}
https://stackoverflow.com/questions/14891044
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