PowerShell で扱える変数型備忘録

2020/04/18

.NET Framework の CTS (Common Type System) で扱えると何処かでみた(ソース忘れた)ので、まずはそこから調べていたけど、PowerShell.com に判りやすい一覧表があった。

ついでなので、最大値と最小値も調べてみた。

type FullName MinValue MaxValue
[array] System.Array
[bool] System.Boolean
[byte] System.Byte 0 255
[char] System.Char
[datetime] System.DateTime 0001/01/01 0:00:00 9999/12/31 23:59:59
[decimal] System.Decimal -79228162514264337593543950335 79228162514264337593543950335
[double] System.Double -1.79769313486232E+308 1.79769313486232E+308
[guid] System.Guid
[hashtable] System.Collections.Hashtable
[int16] System.Int16 -32768 32767
[int32], [int] System.Int32 -2147483648 2147483647
[int64], [long] System.Int64 -9223372036854775808 9223372036854775807
[nullable] System.Nullable
[psobject] System.Management.Automation.PSObject
[regex] System.Text.RegularExpressions.Regex
[sbyte] System.SByte -128 127
[scriptblock] System.Management.Automation.ScriptBlock
[single], [float] System.Single -3.402823E+38 3.402823E+38
[string] System.String
[switch] System.Management.Automation.SwitchParameter
[timespan] System.TimeSpan -10675199.02:48:05.4775808 10675199.02:48:05.4775807
[type] System.Type
[uint16] System.UInt16 0 65535
[uint32] System.UInt32 0 4294967295
[uint64] System.UInt64 0 18446744073709551615
[xml] System.Xml.XmlDocument

調査のためのサンプルコード

$types = @([array], [bool], [byte], [char], [datetime], [decimal], [double], [guid], [hashtable], [int16], [int32], [int], [int64], [long], [nullable], [psobject], [regex], [sbyte], [scriptblock], [single], [float], [string], [switch], [timespan], [type], [uint16], [uint32], [uint64], [xml])

foreach($type in $types){
    Write-Output ("| {0} | {1} | {2} | {3} |" -f $type.Name, $type.FullName, $type::MinValue, $type::MaxValue)
}

参考

ProgrammingPowerShell

Posted by みやみや