理解 For Each 循环 [英] understanding the For Each Loop

问题描述

我是脚本和编程的新手.

I'm new to scripting and programming.

在以下和类似的脚本中，我注意到存在一个objOperatingSystem"在For Each"循环中引用.我知道colSettings"是一个包含 WMI 集合的变量，但是objOperatingSystem"从何而来?

In the following and similar scripts, I noticed that there exists a 'objOperatingSystem' that is referred to in the 'For Each' loop. I understand that 'colSettings' is a variable that contains the WMI collection, but where does the 'objOperatingSystem' come from ?

请帮忙.谢谢！！！

strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" _
    & strComputer & "\root\cimv2")
Set colSettings = objWMIService.ExecQuery _
    ("Select * from Win32_OperatingSystem")
For Each objOperatingSystem in colSettings 
    Wscript.Echo "Available Physical Memory: " & _
        objOperatingSystem.FreePhysicalMemory
Next

推荐答案

objOperatingSystem 是一个变量.For Each 声明了它.基本上，对于 colSettings 中的每个项目，一个名为 objOperatingSystem 的变量将被设置为当前项目，并执行 for 循环的主体.

objOperatingSystem is a variable. For Each declared it. Basically, for every item in colSettings a variable named objOperatingSystem will be set to the current item, and the body of the for loop executed.

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