文字と数値が混ざった式は、左の型に合わせる？ でにキャスト？すれば変換できるっぽい
PS C:\> 1 + "1" 2 PS C:\> "1" + 1 11 PS C:\> [long]"1" + 1 2
変数の型
最初に使用するときに型の宣言をすれば、その型の変数になる。
使用をやめるときはRemove-Variable "$を付けないの変数名"
PS C:\> [long]$i = 1
PS C:\> $i = "abc"
値 "abc" を型 "System.Int64" に変換できません。エラー: "入力文字列の形式が正しくありません。"
発生場所 行:1 文字:1
+ $i = "abc"
+ ~~~~~~~~~~
+ CategoryInfo : MetadataError: (:) [], ArgumentTransformationMetadataException
+ FullyQualifiedErrorId : RuntimeException
PS C:\> Remove-Variable i
PS C:\> $i = "abc"
PS C:\> $i
abc
短縮形が登録されている型と正式型（Ver. 5.1の場合）
PS C:\> [psobject].Assembly.GetType("System.Management.Automation.TypeAccelerators")::Get
Key Value
--- -----
Alias System.Management.Automation.AliasAttribute
AllowEmptyCollection System.Management.Automation.AllowEmptyCollectionAttribute
AllowEmptyString System.Management.Automation.AllowEmptyStringAttribute
AllowNull System.Management.Automation.AllowNullAttribute
ArgumentCompleter System.Management.Automation.ArgumentCompleterAttribute
array System.Array
bool System.Boolean
byte System.Byte
char System.Char
CmdletBinding System.Management.Automation.CmdletBindingAttribute
datetime System.DateTime
decimal System.Decimal
double System.Double
DscResource System.Management.Automation.DscResourceAttribute
float System.Single
single System.Single
guid System.Guid
hashtable System.Collections.Hashtable
int System.Int32
int32 System.Int32
int16 System.Int16
long System.Int64
int64 System.Int64
ciminstance Microsoft.Management.Infrastructure.CimInstance
cimclass Microsoft.Management.Infrastructure.CimClass
cimtype Microsoft.Management.Infrastructure.CimType
cimconverter Microsoft.Management.Infrastructure.CimConverter
IPEndpoint System.Net.IPEndPoint
NullString System.Management.Automation.Language.NullString
OutputType System.Management.Automation.OutputTypeAttribute
ObjectSecurity System.Security.AccessControl.ObjectSecurity
Parameter System.Management.Automation.ParameterAttribute
PhysicalAddress System.Net.NetworkInformation.PhysicalAddress
pscredential System.Management.Automation.PSCredential
PSDefaultValue System.Management.Automation.PSDefaultValueAttribute
pslistmodifier System.Management.Automation.PSListModifier
psobject System.Management.Automation.PSObject
pscustomobject System.Management.Automation.PSObject
psprimitivedictionary System.Management.Automation.PSPrimitiveDictionary
ref System.Management.Automation.PSReference
PSTypeNameAttribute System.Management.Automation.PSTypeNameAttribute
regex System.Text.RegularExpressions.Regex
DscProperty System.Management.Automation.DscPropertyAttribute
sbyte System.SByte
string System.String
SupportsWildcards System.Management.Automation.SupportsWildcardsAttribute
switch System.Management.Automation.SwitchParameter
cultureinfo System.Globalization.CultureInfo
bigint System.Numerics.BigInteger
securestring System.Security.SecureString
timespan System.TimeSpan
uint16 System.UInt16
uint32 System.UInt32
uint64 System.UInt64
uri System.Uri
ValidateCount System.Management.Automation.ValidateCountAttribute
ValidateDrive System.Management.Automation.ValidateDriveAttribute
ValidateLength System.Management.Automation.ValidateLengthAttribute
ValidateNotNull System.Management.Automation.ValidateNotNullAttribute
ValidateNotNullOrEmpty System.Management.Automation.ValidateNotNullOrEmptyAttribute
ValidatePattern System.Management.Automation.ValidatePatternAttribute
ValidateRange System.Management.Automation.ValidateRangeAttribute
ValidateScript System.Management.Automation.ValidateScriptAttribute
ValidateSet System.Management.Automation.ValidateSetAttribute
ValidateUserDrive System.Management.Automation.ValidateUserDriveAttribute
version System.Version
void System.Void
ipaddress System.Net.IPAddress
DscLocalConfigurationManager System.Management.Automation.DscLocalConfigurationManagerAttribute
WildcardPattern System.Management.Automation.WildcardPattern
X509Certificate System.Security.Cryptography.X509Certificates.X509Certificate
X500DistinguishedName System.Security.Cryptography.X509Certificates.X500DistinguishedName
xml System.Xml.XmlDocument
CimSession Microsoft.Management.Infrastructure.CimSession
adsi System.DirectoryServices.DirectoryEntry
adsisearcher System.DirectoryServices.DirectorySearcher
wmiclass System.Management.ManagementClass
wmi System.Management.ManagementObject
wmisearcher System.Management.ManagementObjectSearcher
mailaddress System.Net.Mail.MailAddress
scriptblock System.Management.Automation.ScriptBlock
psvariable System.Management.Automation.PSVariable
type System.Type
psmoduleinfo System.Management.Automation.PSModuleInfo
powershell System.Management.Automation.PowerShell
runspacefactory System.Management.Automation.Runspaces.RunspaceFactory
runspace System.Management.Automation.Runspaces.Runspace
initialsessionstate System.Management.Automation.Runspaces.InitialSessionState
psscriptmethod System.Management.Automation.PSScriptMethod
psscriptproperty System.Management.Automation.PSScriptProperty
psnoteproperty System.Management.Automation.PSNoteProperty
psaliasproperty System.Management.Automation.PSAliasProperty
psvariableproperty System.Management.Automation.PSVariableProperty
