Return value of PowerShell's String.Replace

Question

Consider:

$str = 'My {token} string'

$newStr = $str.Replace('{token}', 'value')
$newStr
My value string

function strReplace ($str, $rval) { $str.Replace('{token}', $rval) }
$newStr = strReplace($str, 'value')
$newStr
My  string
value

Even though string.Replace returns a single string, an object[] shows up in the return pipeline. Why? Is there a way to get the obvious return value?

when I run this code, it get an error with the following line: $newStr = strReplace($str, 'value') but when I replace it with: $newStr = strReplace $str 'value' it works as expected. I'm using Powershell 2.0 with .net 4.0 — Musaab Al-Okaidi
– Musaab Al-Okaidi, Commented Feb 21, 2013 at 20:05

Peter Mortensen · Accepted Answer · 2018-08-26 17:05:05Z

3

It's because you are passing in an array as the argument for $str in your function. You need to call PowerShell functions like this (no brackets, no commas separating arguments):

$newStr = strReplace $str 'value'

edited Aug 26, 2018 at 17:05

Peter Mortensen

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answered Feb 21, 2013 at 20:05

zdan

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2 Comments

bob Over a year ago

Thanks, but I get the same object[] even after removing the parentheses. I'm using ps3 on Win8.

Frode F. Over a year ago

Did you remember to drop the comma too? spaces are used to seperate arguments

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