A script block returns the output of all the commands in the script block, either as a single object or as an array. You can also specify a return value using the return keyword. The return keyword doesn't affect or suppress other output returned from your script block. However, the retu...
InvokeReturnAsIs 实例方法 object/object[] 使用指定的参数调用脚本块,并返回生成的任何对象。 创建 静态方法 scriptblock /字符串 创建包含指定脚本的新 scriptblock 对象。 在PowerShell 中,scriptblock 映射到 System.Management.Automation.ScriptBlock。 Invoke 返回PSObject的集合。 4.3.8 math 类型 类型math 提供...
In PowerShell, the key to metaprogramming (or writing programs that write or manipulate other programs), is something called thescriptblock. This is a block of script code that exists as an object reference but does not require a name. The Where-Object and Foreach-Object Cmdlets rely on sc...
ScriptBlock属性可以在不查看文档的情况下显示在当前函数中包含的功能。下例获取当前函数的信息:展开表 PS C:\> $helloFunction.ScriptBlock Write-Host " Hello World from a function in PowerShell." PS C:\> &$helloFunction.ScriptBlock Hello World from a function in PowerShell.上例中使用了调用操作...
To simplify the syntax forfilterfunctions, omit the script block keyword (begin,process,end,clean). PowerShell puts the statements in theprocessblock. You can use any of the other blocks in a filter function, but the intent was to provide a shorthand way of defining a function that has the...
static [Book[]] FindAll([scriptblock]$Predicate) { [BookList]::Initialize() return [BookList]::Books.FindAll($Predicate) } # Remove a specific book. static [void] Remove([Book]$Book) { [BookList]::Initialize() [BookList]::Books.Remove($Book) } # Remove a book by property value...
Causes PowerShell to leave the current scope, such as a script or function, and writes the optional expression to the output.Syntax:Syntax Kopēt return [<expression>] staticSpecifies the property or method defined is common to all instances of the class in which it is defined....
Update-TypeData 命令使用 TypeName 参数指定 System.DateTime 类型,使用 MemberName 参数指定新属性的名称,使用 MemberType 属性指定 ScriptProperty 类型,使用 Value 参数指定用于确定季度的脚本。Value 属性的值是一个用于计算当前年度季度的脚本。 该脚本块使用 $this 自动变量表示该对象的当前实例,并使用 In 运算符...
$ScriptBlock= {Param([string]$line)if($line-match"^git") {return$false}else{return$true} }Set-PSReadLineOption-AddToHistoryHandler$ScriptBlock 如果命令以git开头,则 scriptblock 返回$false。 这与返回SkipAddingAddToHistory枚举的效果相同。 如果命令不以git开头,处理程序将返回$true,PSReadLine 会将命...
$processBlock } } “ Let’s take it for a quick spin. The command to do this is really easy, as shown here: .([ScriptBLock]::Create($watchFileFunction)) Let’s create 10 test files. These new files will be used to test the file system watcher: ...