11 ms·

I'm still a PowerShell novice, but I believe ForEach-Object and ForEach are subtly different, and PowerShell has classic For(Init; Condition; Increment) loops a

I'm still a PowerShell novice, but I believe ForEach-Object and ForEach are subtly different, and PowerShell has classic For(Init; Condition; Increment) loops also but it's even more different than those two.

deafpolygon 3y ago
ForEach-Object and ForEach are the same thing. Get-Help ForEach-Object ... ALIASES foreach %
- cyberbanjo 3y ago
  I have seen that, and that's partially why it seemed so confusing to me but at least one difference is The ForEach-Object cmdlet works much like the Foreach statement, except that you can't pipe input to a Foreach statement. For more information about the Foreach statement, see about_Foreach. https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/foreach-object?view=powershell-7.3#notes https://learn.microsoft.com/en-us/powershell/module/microsof... And another appears to be performance PS /home/me> $time = (Measure-Command { >> 1..1E4 | ForEach-Object { >> $_ >> } >> }).TotalMilliseconds PS /home/me> [pscustomobject]@{ >> Type = 'ForEach-Object' >> Time_ms = $Time >> } Type Time_ms ---- ------- ForEach-Object 144.558 PS /home/me> $Time = (Measure-Command { >> ForEach ($i in (1..1E4)) { >> $i >> } >> }).TotalMilliseconds PS /home/me> [pscustomobject]@{ >> Type = 'ForEach_Statement' >> Time_ms = $Time >> } Type Time_ms ---- ------- ForEach_Statement 17.621 https://devblogs.microsoft.com/scripting/getting-to-know-foreach-and-foreach-object/ https://devblogs.microsoft.com/scripting/getting-to-know-for...
  - deafpolygon 3y ago
    Hey TIL, though, I knew there was a difference (the foreach statement is meant to be typed all lower-cased, since it is not a cmdlet but really a shell built-in but PowerShell is case-insensitive). Get-Help gets you information on cmdlets, not shell built-ins. Though I was referring to the cmdlet, you're absolutely correct.

deafpolygon 3y ago

ForEach-Object and ForEach are the same thing. Get-Help ForEach-Object ... ALIASES foreach %

cyberbanjo 3y ago
I have seen that, and that's partially why it seemed so confusing to me but at least one difference is The ForEach-Object cmdlet works much like the Foreach statement, except that you can't pipe input to a Foreach statement. For more information about the Foreach statement, see about_Foreach. https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/foreach-object?view=powershell-7.3#notes https://learn.microsoft.com/en-us/powershell/module/microsof... And another appears to be performance PS /home/me> $time = (Measure-Command { >> 1..1E4 | ForEach-Object { >> $_ >> } >> }).TotalMilliseconds PS /home/me> [pscustomobject]@{ >> Type = 'ForEach-Object' >> Time_ms = $Time >> } Type Time_ms ---- ------- ForEach-Object 144.558 PS /home/me> $Time = (Measure-Command { >> ForEach ($i in (1..1E4)) { >> $i >> } >> }).TotalMilliseconds PS /home/me> [pscustomobject]@{ >> Type = 'ForEach_Statement' >> Time_ms = $Time >> } Type Time_ms ---- ------- ForEach_Statement 17.621 https://devblogs.microsoft.com/scripting/getting-to-know-foreach-and-foreach-object/ https://devblogs.microsoft.com/scripting/getting-to-know-for...
- deafpolygon 3y ago
  Hey TIL, though, I knew there was a difference (the foreach statement is meant to be typed all lower-cased, since it is not a cmdlet but really a shell built-in but PowerShell is case-insensitive). Get-Help gets you information on cmdlets, not shell built-ins. Though I was referring to the cmdlet, you're absolutely correct.