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PowerShell: Type accelerators

A type accelerator is an alias for a .NET class.

Currently available type accelerators

The currently available type accelarators can be determined with the System.Management.Automation.TypeAccelerators class: 
$accels = [psObject].Assembly.GetType('System.Management.Automation.TypeAccelerators')::Get
$names  = $accels.keys | sort-object

foreach ($name in $names) {
  '{0, -30} {1}' -f $name, $accels[$name].FullName
}
Github repository about-PowerShell, path: /language/object/type/accelerators/get.ps1
Accelerator .NET class/struct … Comment
adsi System.DirectoryServices.DirectoryEntry
adsisearcher System.DirectoryServices.DirectorySearcher
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
ArgumentCompletions System.Management.Automation.ArgumentCompletionsAttribute
array System.Array
bigint System.Numerics.BigInteger
bool System.Boolean
byte System.Byte
char System.Char
cimclass Microsoft.Management.Infrastructure.CimClass
cimconverter Microsoft.Management.Infrastructure.CimConverter
ciminstance Microsoft.Management.Infrastructure.CimInstance
CimSession Microsoft.Management.Infrastructure.CimSession
cimtype Microsoft.Management.Infrastructure.CimType
CmdletBinding System.Management.Automation.CmdletBindingAttribute ? Required to create an advanced function ?
cultureinfo System.Globalization.CultureInfo
datetime System.DateTime
decimal System.Decimal
double System.Double
DscLocalConfigurationManager System.Management.Automation.DscLocalConfigurationManagerAttribute
DscProperty System.Management.Automation.DscPropertyAttribute
DscResource System.Management.Automation.DscResourceAttribute
enum System.Enum This accelerator was not found with this script.
ExperimentAction System.Management.Automation.ExperimentAction
Experimental System.Management.Automation.ExperimentalAttribute
ExperimentalFeature System.Management.Automation.ExperimentalFeature experimental features in PowerShell core
float System.Single
guid System.Guid
hashtable System.Collections.Hashtable See also hashtables in PowerShell
initialsessionstate System.Management.Automation.Runspaces.InitialSessionState
int System.Int32 Same as [int32]
int16 System.Int16
int32 System.Int32 Same as [int]
int64 System.Int64
ipaddress System.Net.IPAddress
IPEndpoint System.Net.IPEndPoint
long System.Int64
mailaddress System.Net.Mail.MailAddress
NullString System.Management.Automation.Language.NullString
ObjectSecurity System.Security.AccessControl.ObjectSecurity
OutputType System.Management.Automation.OutputTypeAttribute
Parameter System.Management.Automation.ParameterAttribute
PhysicalAddress System.Net.NetworkInformation.PhysicalAddress
powershell System.Management.Automation.PowerShell
psaliasproperty System.Management.Automation.PSAliasProperty
pscredential System.Management.Automation.PSCredential
psCustomObject System.Management.Automation.PSObject Same as type accelerator psObject
PSDefaultValue System.Management.Automation.PSDefaultValueAttribute
pslistmodifier System.Management.Automation.PSListModifier
psmoduleinfo System.Management.Automation.PSModuleInfo
psnoteproperty System.Management.Automation.PSNoteProperty
psObject System.Management.Automation.PSObject Same as type accelerator psCustomObject
psprimitivedictionary System.Management.Automation.PSPrimitiveDictionary
pspropertyexpression Microsoft.PowerShell.Commands.PSPropertyExpression
psscriptmethod System.Management.Automation.PSScriptMethod
psscriptproperty System.Management.Automation.PSScriptProperty
PSTypeNameAttribute System.Management.Automation.PSTypeNameAttribute
psvariable System.Management.Automation.PSVariable
psvariableproperty System.Management.Automation.PSVariableProperty
ref System.Management.Automation.PSReference Used for passing function parameters by reference
regex System.Text.RegularExpressions.Regex Used for regular expressions
runspace System.Management.Automation.Runspaces.Runspace
runspacefactory System.Management.Automation.Runspaces.RunspaceFactory
sbyte System.SByte
scriptblock System.Management.Automation.ScriptBlock
securestring System.Security.SecureString
semver System.Management.Automation.SemanticVersion
short System.Int16
single System.Single
string System.String
SupportsWildcards System.Management.Automation.SupportsWildcardsAttribute
switch System.Management.Automation.SwitchParameter See switch parameters in PowerShell functions
timespan System.TimeSpan
type System.Type
uint System.UInt32
uint16 System.UInt16
uint32 System.UInt32
uint64 System.UInt64
ulong System.UInt64
uri System.Uri
ushort System.UInt16
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
ValidateTrustedData System.Management.Automation.ValidateTrustedDataAttribute
ValidateUserDrive System.Management.Automation.ValidateUserDriveAttribute
version System.Version
void System.Void
WildcardPattern System.Management.Automation.WildcardPattern
wmi System.Management.ManagementObject
wmiclass System.Management.ManagementClass
wmisearcher System.Management.ManagementObjectSearcher
X500DistinguishedName System.Security.Cryptography.X509Certificates.X500DistinguishedName
X509Certificate System.Security.Cryptography.X509Certificates.X509Certificate
xml System.Xml.XmlDocument
The type accelerators that start with validate* (vor example validateScript) are used in a function's or script's param statement to validate the values of parameters (see Parameter attributes).

'using namespace' statement

In PowerShell5, a namespace can be imported with the using namespace statement: 
add-type  -assemblyName Microsoft.VisualBasic

using namespace Microsoft.VisualBasic

$comObj = [System.Runtime.InteropServices.Marshal]::GetActiveObject('Excel.Application')

[Information]::TypeName($comObj.selection)

See also

[ordered] @{ … } creates an ordered hash table. Although [ordered] with its square brackets looks like a type accelerator, it is not.

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Windows/...', 1788382851, '216.73.217.21', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Windows/PowerShell/language/object/type/accelerators(177): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78