ForEach 建構會針對每個物件處理一次大括弧之間的 Windows PowerShell 命令。 處理命令時,$user 是包含陣列中每個項目的變數。 在第一個反覆項目上,$user 包含$users[0],而在第二個反覆項目上,$user 包含$user[1]。 這會繼續執行,直到陣列中的所有項目都已處理一次為止。 在指令碼中,ForEach...
caseSensitive; break; } //End of If. } //End ForEach loop. } // End of If if script exists. // If script block exists, see if this line matches any // of the match patterns. else { int patternIndex = 0; while (patternIndex < patterns.Length) { if ((simpleMatch && ...
循环结构是程序员常用的控制流程，而for循环和foreach循环是其中比较常见的两种形式。
<命令> | ForEach -process {指令區塊} [-begin {指令區塊}] [-end {指令區塊}] 例如以下兩個例子,第一個先以 dir 列出目前磁碟目錄底下所有的檔案和目錄,然後將結果透過管線送到 ForEach,而 ForEach 會以 {指令區塊} 處理每一筆檔案和目錄;也就是將每個檔案或目錄的長度除以 1024,並加以顯示(以 KB ...
-f $item.FullName, $errors.Count Write-Warning $msg } :tokenLoop foreach ($token in $tokens) { if ($token.Kind -ne 'Function') { continue } $position = $token.Extent.StartLineNumber do { if (-not $foreach.MoveNext()) { break tokenLoop } $token = $foreach.Current } until (...
介绍了 Windows PowerShell 工作流中的foreach -Parallel语言构造。 详细说明 关键字的 Parallel 参数指示针对指定集合中的每个项将foreach脚本块中的命令运行一次。foreach 将对集合中的项(例如磁盘集合中的磁盘)进行并行处理。 脚本块中的命令按顺序针对集合中的每个项运行。
Summary: Microsoft Scripting Guy, Ed Wilson, talks about using the Windows PowerShellForeachstatement to loop through a collection. Microsoft Scripting Guy, Ed Wilson, is here. When the Scripting Wife and I were in Amsterdam, Windows PowerShell MVP, Jeff Wouters, told me that a lot of people...
But there is a fair amount of overhead involved and many times there is no gain in running scripts in parallel, and in fact it can end up being significantly slower than running ForEach-Object normally. PowerShell currently supports parallelism in three main categories. PowerShell remoting. ...
I wonder if it's possible to run a foreach loop 2 time, for example$x=1..5\n\nforeach ($v in $x) {\nWrite-Host $v\nif ($foreach.current -eq $x.Count){\n Write-Host \"I reach the end and will change the values\"\n $x=100..105\n $foreach.reset()}\n \n}\n\"...
PS > "a","b","c" | Foreach-Object ` -Begin { "Starting"; $counter = 0 } ` -Process { "Processing $_"; $counter++ } ` -End { "Finishing: $counter" } Starting Processing a Processing b Processing c Finishing: 3 Thewhileanddo..whileloops are similar, in that they continue to...