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...
$SC2 = { param($x, $y) return $x + $y } 脚本块通过Invoke-Command命令运行,语法如下: Invoke-Command -ScriptBlock {<脚本块>} #无参数脚本块的运行 Invoke-Command -ScriptBlock {<脚本块>} -ArgumentList <参数1>, <参数2>, ... #有参数脚本块的运行 运行上述两个脚本块的代码是: Invoke-...
在PowerShell 中,scriptblock 對應至 System.Management.Automation.ScriptBlock。 Invoke 會傳回 PSObject的集合。 4.3.8 數學類型 類型math 提供某些常數和方法的存取權,這些常數和方法在數學計算中很有用。 它有下列可存取的成員: 展開資料表 成員 成員類型 類型 用途 E 靜態屬性 (只讀) 雙 自然對數基底 圓周...
In PowerShell, the key to metaprogramming (or writing programs that write or manipulate other programs), is something called thescriptblock. This is a block of script code that exists as an object reference but does not require a name. The Where-Object and Foreach-Object Cmdlets rely on sc...
Adding thecleanblock is a breaking change. Becausecleanis parsed as a keyword, it prevents users from directly calling a command namedcleanas the first statement in a script block. However, it's not likely to be a problem. You can still invoke the command using the call operator (& clean...
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static [void] Clear() { [BookList]::Initialize() [BookList]::Books.Clear() } # Find a specific book using a filtering scriptblock. static [Book] Find([scriptblock]$Predicate) { [BookList]::Initialize() return [BookList]::Books.Find($Predicate) } # Find every book matching the filt...
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...
Conditionals.The language constructifis used to evaluate a conditional expression. When the conditional expression is true, ascript block is executed. If the conditional expression is other than true -- noted assomething else-- then alternative commands, functions and cmdlets can be executed. ...
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...