Split-ObjectList

SYNOPSIS

Provides the functionality to split a list of objects into chunks based on the specified mode.

SYNTAX

Split-ObjectList [-ByPercentage] -PercentageList <UInt32[]> -InputObjectList <Object[]> [-ContinueOnError]
 [<CommonParameters>]

DESCRIPTION

This is the more performant method of breaking an object into chunks for various use cases.

EXAMPLES

EXAMPLE 1

$SplitObjectListResult = Split-ObjectList -ByPercentage -PercentageList @(5, 10, 15, 20, 25, 25) -InputObjectList (1..200000) -Verbose

Write-Output -InputObject ($SplitObjectListResult)

EXAMPLE 2

$SplitObjectListParameters = New-Object -TypeName 'System.Collections.Specialized.OrderedDictionary'
  $SplitObjectListParameters.ByPercentage = $True
  $SplitObjectListParameters.PercentageList = New-Object -TypeName 'System.Collections.Generic.List\[UInt32\]'
    $SplitObjectListParameters.PercentageList.Add(5)
    $SplitObjectListParameters.PercentageList.Add(10)
    $SplitObjectListParameters.PercentageList.Add(15)
    $SplitObjectListParameters.PercentageList.Add(20)
    $SplitObjectListParameters.PercentageList.Add(25)
    $SplitObjectListParameters.PercentageList.Add(25)
  $SplitObjectListParameters.InputObjectList = 1..200000
  $SplitObjectListParameters.Verbose = $True
  $SplitObjectListParameters.ContinueOnError = $False

$SplitObjectListResult = Split-ObjectList @SplitObjectListParameters

Write-Output -InputObject ($SplitObjectListResult)

PARAMETERS

-ByPercentage

Places the function into "ByPercentage" mode. This will split the list of objects based on the provided percentage list.

Type: System.Management.Automation.SwitchParameter
Parameter Sets: (All)
Aliases:

Required: True
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

-ContinueOnError

Ignore errors.

Type: System.Management.Automation.SwitchParameter
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

-InputObjectList

A valid list of objects that will be used for splitting.

Type: System.Object[]
Parameter Sets: (All)
Aliases:

Required: True
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False

-PercentageList

The list of percentages to split the list of objects by.

Type: System.UInt32[]
Parameter Sets: (All)
Aliases:

Required: True
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False

CommonParameters

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.

INPUTS

OUTPUTS

System.Management.Automation.PSObject[]

NOTES

Most of the time, various "List" type objects are used with index removal and so forth, which can work, but is not the most performant.

RELATED LINKS

https://stackoverflow.com/questions/56990719/split-array-by-percentage

https://www.infoworld.com/article/3666499/how-to-work-with-a-priority-queue-in-net-6.html

SAMPLE OUTPUT:

Wave    : 1
Count   : 10000
Members : {1, 2, 3, 4...}

Wave    : 2
Count   : 20000
Members : {10001, 10002, 10003, 10004...}

Wave    : 3
Count   : 30000
Members : {30001, 30002, 30003, 30004...}

Wave    : 4
Count   : 40000
Members : {60001, 60002, 60003, 60004...}

Wave    : 5
Count   : 50000
Members : {100001, 100002, 100003, 100004...}

Wave    : 6
Count   : 50000
Members : {150001, 150002, 150003, 150004...}