如何获得管道对象的数量?我不想积累管道来缓冲 [英] How to get count of pipe objects? I don't want accumulate pipe to buffer
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问题描述
假设我有一些powershell代码:
函数计数管道{
[CmdletBinding()]
param(
[Parameter(ValueFromPipeline = $ true)]
[object []] $ inputObject
)
进程{
$ PipeCount = <#如何获取管道数量?期望:#> 5
写输出$ inputObject#路径抛出
}
}
1..5 |计数管| %{$ _}
是的,我可以对温度变量求和/测量并使用三通cmdlet。我认为此解决方案使管道暂停。我认为临时变量也不是解决内存消耗问题的好方法。
谢谢。
解决方案
我认为使用计数器变量是我会使用的解决方案:
函数计数管道{
[CmdletBinding()]
param(
[参数(ValueFromPipeline = $ true)]
[object []] $ InputObject
)
进程{
$ PipeCount ++
$ _
}
结尾{
写详细$ PipeCount
}
}
'a','b'|计数管详细%{$ _}
Assume I have some powershell code:
function count-pipe {
[CmdletBinding()]
param (
[Parameter(ValueFromPipeline=$true)]
[object[]]$inputObject
)
process {
$PipeCount = <# How to get count of the pipe? Expect: #> 5
Write-Output $inputObject # path-throw
}
}
1..5 | count-pipe | % { $_ }
Yes, I can sum/measure count to temp-variable and use the tee cmdlet. I think this solution make pause the pipe. I think also the temp-valiable is not a good solution relate a memory consumption.
Can I get a pipe objects count without accumulate to temp-variable?
Thanks.
解决方案
I think using a counter variable is the solution I would use:
function count-pipe {
[CmdletBinding()]
param (
[Parameter(ValueFromPipeline=$true)]
[object[]]$InputObject
)
Process {
$PipeCount++
$_
}
End {
Write-Verbose $PipeCount
}
}
'a','b' | count-pipe -verbose | % { $_ }
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