如何从嵌套的哈希表值中添加值

Question

下面是我的代码。我想添加然后读取单个值。

$ht = @{
    'Hcohesity01' = @{
        'Audit'  = 1
        'Block'  = 2
        'Change' = 3
        'percentage' = @{
        'server1'  = 4
        'server2'  = 5
        'server3' = 10
    }
    
    }
    'Hcohesity02' = @{
        'Audit'  = 1
        'Block'  = 2
        'Change' = 3
        'percentage' = @{
        'server1'  = 4
        'server2'  = 5
        'server3' = 10
    }
    
    }
}
$ht['Hcohesity02']['percentage']['server4'] = 20
foreach ( $value -in $ht['Hcohesity02']['percentage'].Values){
$server5 += $value
              }

$ht['Hcohesity02']['percentage']['server5'] =$server5
$ht['Hcohesity02']['percentage']

下面的代码不起作用，知道吗？ foreach ( $value -in $ht['Hcohesity02']['percentage'].Values)

Answer 1

不太清楚你要做什么。如果它只是遍历你的 foreach 循环并分配一个值，你需要去掉“-in”上的破折号。它应该如下所示：

foreach ($value in $ht.Hcohesity02.percentage.Values)
{
    # do some stuff
}

Answer 2

代码中唯一真正的错误是在 foreach 循环中写入 -in。那应该只是 in.

您可以使用 one-liner 和 Measure-Object:

而不是使用循环 add-up 值

$ht = @{
    'Hcohesity01' = @{
        'Audit'  = 1
        'Block'  = 2
        'Change' = 3
        'percentage' = @{
            'server1'  = 4
            'server2'  = 5
            'server3' = 10
        }
    }
    'Hcohesity02' = @{
        'Audit'  = 1
        'Block'  = 2
        'Change' = 3
        'percentage' = @{
            'server1'  = 4
            'server2'  = 5
            'server3' = 10
        }
    }
}

$ht['Hcohesity02']['percentage']['server4'] = 20

# instead of a foreach loop:
# $server5 = 0  # initialize
# foreach ( $value in $ht['Hcohesity02']['percentage'].Values) {
    # $server5 += $value
# }

# you can do this:
$server5 = ($ht['Hcohesity02']['percentage'].Values | Measure-Object -Sum).Sum

$ht['Hcohesity02']['percentage']['server5'] = $server5
$ht['Hcohesity02']['percentage']

结果：

Name                           Value                                                                                                                                                
----                           -----                                                                                                                                                
server2                        5                                                                                                                                                    
server5                        39                                                                                                                                                   
server3                        10                                                                                                                                                   
server1                        4                                                                                                                                                    
server4                        20

^{如果您不喜欢使用 [property] 语法处理属性，您也可以使用点符号，如在他的回答中所示：}

$ht.'Hcohesity02'.'percentage'.Values  # and so on

如何从嵌套的哈希表值中添加值

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