How to Reduce Array to dynamic object in Powershell - powershell

Question

I have a JSON array like this:
$json = [
{ "name": "Name", "value": "Mike" },
{ "name": "Age", "value": 25 },
{ "name": "IsMarried", "value": true }
]
Expected output is this:
{
"Name": "Mike",
"Age": 25,
"IsMarried": true
}
In javascript I would do it this way:
const result = json.reduce((acc, { name, value }) => { acc[name] = value; return acc; }, {})
Question:
Is there an existing function like reduce? How can I achieve same effect?

Answer 1

To 'merge' array items like that, I would use an ordered Hashtable like below:
$json = #'
[
{ "name": "Name", "value": "Mike" },
{ "name": "Age", "value": 25 },
{ "name": "IsMarried", "value": true }
]
'#
# create an ordered Hashtable to store the values
$combine = [ordered]#{}
($json | ConvertFrom-Json) | ForEach-Object {
$combine[$_.Name] = $_.Value
}
# now you can leave it as Hashtable and convert it to JSON
$combine | ConvertTo-Json
# or you can convert (cast) to PsCustomObject first:
# [PsCustomObject]$combine | ConvertTo-Json
Result:
{
"Name": "Mike",
"Age": 25,
"IsMarried": true
}