A Programmer with Microsoft tools

Powershell and always use explicit

 

Let’s suppose you have a variable $x=”http://msprogrammer.serviciipeweb.ro/”

In powershell the following are the same

$x

Write-Host $x

 

I want to make a function that returns a value . Let’s say

Function Add([string] $a,[string]$b)

{

#debug to see arguments

$a

$b

return $a + $b

}

 

If I call this function with

Add 10 17 # the syntax for calling powershell is WITHOUT comma – the comma indicates arry

it shows

10

17

27

However,if I wrote

$x = Add 10 17

it does not wrote

10

17

 

Do you know why ?

 

Answer in the first comment

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ignatandrei

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Comments

One response to “Powershell and always use explicit”

  1. Andrei Ignat Avatar
    Andrei Ignat

    Because the function is not returning
    return $a + $b
    but it is returning an array
    ($a,$b, $a +$b)
    In the Powershell function the syntax
    $a
    means returning $a
    The correct function will be

    Function Add([string] $a, [string]$b)
    {
    #debug to see arguments
    Write-Host $a
    Write-Host $b
    return $a + $b
    }

    Reply

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