Powershell convertfrom-json add value's and convertto-json

Question

$json = @"{"mem":[[1377691200,10],[1377770400,0]],"proc":[[1377691200,80],[1377770400,0]]}"@
$jobj = ConvertFrom-Json -InputObject $json
$datetime = 1377780400
$proc = 85
$add = @($datetime, $proc)
$jobj.proc += $($add)
cls
ConvertTo-Json $jobj

The snippet above should add a array value to the json string but is seems to add to seperate values.

In the result the added values dont have [] and if i goto $jobj.proc[3] and [4] the values are split out of there original array. What can i do to fix this?

I found question PowerShell how to add something on parsed JSON?

But i dont have names for my entries so that wont work :(

Any clues

to test hit enter after @" and before "@ in the json string – Sjoerd Mar 23 '15 at 02:15 — Sjoerd, Mar 23 '15 at 02:15

score 1 · Accepted Answer · answered Mar 23 '15 at 02:21

1

This seems to work:

$json = '{"mem":[[1377691200,10],[1377770400,0]],"proc":[[1377691200,80],[1377770400,0]]}'
$jobj = ConvertFrom-Json -InputObject $json
$datetime = 1377780400
$proc = 85
$add = @($datetime, $proc)
$jobj.proc += ,$add
cls
ConvertTo-Json $jobj

Adding the leading comma in the += operation prevents "unrolling" the $add array.

answered Mar 23 '15 at 02:21

mjolinor

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Welcome! Now it won't be rolling around in your head while you're trying to get to sleep :) – mjolinor Mar 23 '15 at 02:24

Powershell convertfrom-json add value's and convertto-json

1 Answers1