Vista Tutorial - Array Indexes

The following returns all array items that equels to 3

PS C:\Scripts> @(1,2,3,5,3,2) -eq 3
3
3

How can I get the index numbers instead of the item content (i.e., 2,4)?


Shay
http://scriptolog.blogspot.com

Shay Levi wrote:
>
> The following returns all array items that equels to 3
>
> PS C:\Scripts> @(1,2,3,5,3,2) -eq 3
> 3
> 3
>
> How can I get the index numbers instead of the item content (i.e., 2,4)?
>
>
> Shay
> http://scriptolog.blogspot.com
>
>

arrays don't seem to have a lot of members to work with...

You just need a simple solution?

$i=0;@(1,2,3,5,3,2)|foreach-object{if($_ -eq 3){$i};$i++}

Marco

--
----------------
PowerGadgets MVP
http://www.powergadgets.com/mvp

Blog:
http://marcoshaw.blogspot.com

On Aug 13, 1:13 pm, Shay Levi <n...@addre.ss> wrote:
> The following returns all array items that equels to 3
>
> PS C:\Scripts> @(1,2,3,5,3,2) -eq 3
> 3
> 3
>
> How can I get the index numbers instead of the item content (i.e., 2,4)?
>
> Shayhttp://scriptolog.blogspot.com

Someone will probably be along with a better answer in a bit, but from
what I can see there is no native member of the array class that will
return a collection of indicies rather than types.

Ofcourse you could always just loop through the array and return each
index - or build up your own collection if you need them alltogether

for($i=0; $i -lt $a.length; $i++) {if($a[$i] -eq 3) {$a[$i]}}

There is another option of using the [array]::IndexOf() method, this
only returns the first match, but there's an overloaded signature that
constricts the start and end indicies that govern the search, so you
could call it iteratively. I figure by the time you've done this
you've created more work than the above simple loop though.

Regards,

Duncan

Thanks Marco & Duncan.

Shay
http://scriptolog.blogspot.com



> On Aug 13, 1:13 pm, Shay Levi <n...@addre.ss> wrote:
>
>> The following returns all array items that equels to 3
>>
>> PS C:\Scripts> @(1,2,3,5,3,2) -eq 3
>> 3
>> 3
>> How can I get the index numbers instead of the item content (i.e.,
>> 2,4)?
>>
>> Shayhttp://scriptolog.blogspot.com
>>
> Someone will probably be along with a better answer in a bit, but from
> what I can see there is no native member of the array class that will
> return a collection of indicies rather than types.
>
> Ofcourse you could always just loop through the array and return each
> index - or build up your own collection if you need them alltogether
>
> for($i=0; $i -lt $a.length; $i++) {if($a[$i] -eq 3) {$a[$i]}}
>
> There is another option of using the [array]::IndexOf() method, this
> only returns the first match, but there's an overloaded signature that
> constricts the start and end indicies that govern the search, so you
> could call it iteratively. I figure by the time you've done this
> you've created more work than the above simple loop though.
>
> Regards,
>
> Duncan
>

My two cents..

0..(1,2,3,5,3,2).length|?{(1,2,3,5,3,2)[$_]-eq3}

$a=1,2,3,5,3,2;0..$a.length|?{$a[$_]-eq3}

--
Kiron

Thanks guys for your answers.
I filled a suggestion on the Windows PowerShell feedback page on connect,
fill free to vote

https://connect.microsoft.com/feedba...3137&SiteID=99


Shay
http://scriptolog.blogspot.com



> The following returns all array items that equels to 3
>
> PS C:\Scripts> @(1,2,3,5,3,2) -eq 3
> 3
> 3
> How can I get the index numbers instead of the item content (i.e.,
> 2,4)?
>
> Shay
> http://scriptolog.blogspot.com