powershell有关联数组吗？

Question

我正在编写一个返回id，name对的函数。

我想做点什么

$a = get-name-id-pair()
$a.Id
$a.Name

喜欢在javascript中可能。或者至少

$a = get-name-id-pair()
$a["id"]
$a["name"]

像在php中可能的那样。我能用PowerShell做到吗？

Answer 1

也

$a = @{'foo'='bar'}

或

$a = @{}
$a.foo = 'bar'

Answer 2

是。使用以下语法创建它们

$a = @{}
$a["foo"] = "bar"

Answer 3

还会添加迭代哈希表的方法，因为我正在寻找解决方案而没有找到一个......

$c = @{"1"="one";"2"="two"} 
foreach($g in $c.Keys){write-host $c[$g]} #where key = $g and value = $c[$g]

Answer 4

#Define an empty hash
$i = @{}

#Define entries in hash as a number/value pair - ie. number 12345 paired with Mike is   entered as $hash[number] = 'value'

$i['12345'] = 'Mike'  
$i['23456'] = 'Henry'  
$i['34567'] = 'Dave'  
$i['45678'] = 'Anne'  
$i['56789'] = 'Mary'  

#(optional, depending on what you're trying to do) call value pair from hash table as a variable of your choosing

$x = $i['12345']

#Display the value of the variable you defined

$x

#If you entered everything as above, value returned would be:

Mike

Answer 5

PS C:\> $a = @{}                                                      
PS C:\> $a.gettype()                                                  

IsPublic IsSerial Name                                     BaseType            

-------- -------- ----                                     --------            

True     True     Hashtable                                System.Object       

因此哈希表是一个关联数组。哦~~。

或者：

PS C:\> $a = [Collections.Hashtable]::new()

Answer 6

你也可以这样做：

function get-faqentry { "meaning of life?", 42 }
$q, $a = get-faqentry 

不是关联数组，但同样有用。

-Oisin

Answer 7

我在处理多个域时使用它来跟踪站点/目录。在声明数组时可以初始化数组，而不是单独添加每个条目：

$domain = $env:userdnsdomain
$siteUrls = @{ 'TEST' = 'http://test/SystemCentre' 
               'LIVE' = 'http://live/SystemCentre' }

$url = $siteUrls[$domain]

Answer 8

从JSON字符串创建

$people= '[
{
"name":"John", 
"phone":"(555) 555-5555"
},{
"name":"Mary", 
"phone":"(444) 444-4444"
}
]';

# Convert String To Powershell Array
$people_obj = ConvertFrom-Json -InputObject $people;

# Loop through them and get each value by key.
Foreach($person in $people_obj ) {
    echo $person.name;
}