PowerShell foreach, First expression runs once and the next expressions runs in loop -

in below powershell statement, looks first expression in {} runs once second expression in {} runs each of pipeline output, why?

1..5 | foreach{ write-host "run once!!" }{ write-host "loop"} 

output: run once!! loop loop loop loop loop

any specific reason why first expression after foreach runs once?

the way write makes run advanced function begin/process/end construct. so:

ps c:\> 1..5 | foreach -begin{ write-host 'run once!!' }-process { write-host 'loop'} -end{write-host 'finished!'} run once!! loop loop loop loop loop finished! 

you want when specific requires several steps process, so:

begin {   connect }    process    {      number of things    } end {   disconnect }