<![CDATA[multiply all element of list]]>Hi Forum,

I would like to multiply all elements in a list and make a new list of the result.

Is there a way to do this by manipulating the list directly?

Thanks!

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-listRSS for NodeSun, 19 Jul 2026 12:10:06 GMTMon, 23 May 2022 12:51:59 GMT60<![CDATA[Reply to multiply all element of list on Mon, 23 May 2022 12:51:59 GMT]]>Hi Forum,

I would like to multiply all elements in a list and make a new list of the result.

Is there a way to do this by manipulating the list directly?

Thanks!

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-listhttp://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-listMon, 23 May 2022 12:51:59 GMT<![CDATA[Reply to multiply all element of list on Mon, 23 May 2022 17:28:47 GMT]]>@cfry I don't think so...... but it's a simple operation using the list-abs library....
list-apply.zip.... with [list-drip] doing all the work as usual.
All vanilla.
David.

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/2http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/2Mon, 23 May 2022 17:28:47 GMT<![CDATA[Reply to multiply all element of list on Tue, 24 May 2022 05:03:33 GMT]]>@cfry Here is an improved list-apply, it uses [list store] so does not iterate the list, just does the math on each list item individually. As a bonus you can change the function on the fly to most anything. No time for an in depth help file, but this should suffice.

Edit; this requires at least pd 0.52 for the [list store] [set( message.
list-apply.pd
list-apply-help.pd
Untitled1.png
Untitled2.png

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/3http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/3Tue, 24 May 2022 05:03:33 GMT<![CDATA[Reply to multiply all element of list on Tue, 24 May 2022 17:10:39 GMT]]>Here’s a dynamic version so the same object can be used with all arithmetic operators.
It uses [else/dollsym] but that can be easily removed.
Hope this helps,
list_op.pd urn_demo.png

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/4http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/4Tue, 24 May 2022 17:10:39 GMT<![CDATA[Reply to multiply all element of list on Tue, 24 May 2022 17:12:16 GMT]]>Sorry just realized @oid has a much better solution ;)

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/5http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/5Tue, 24 May 2022 17:12:16 GMT<![CDATA[Reply to multiply all element of list on Tue, 24 May 2022 20:03:53 GMT]]>Thank you all, this will come handy. Then I will replace my awkward improvisation ->
listprocess.png

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/6http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/6Tue, 24 May 2022 20:03:53 GMT<![CDATA[Reply to multiply all element of list on Tue, 24 May 2022 21:07:45 GMT]]>For simple operations it would also be possible to use [expr $f1 $1 $f2] instead of dynamic patching. ;)

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/7http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/7Tue, 24 May 2022 21:07:45 GMT<![CDATA[Reply to multiply all element of list on Tue, 24 May 2022 21:22:02 GMT]]>@ingox I usually use something like [list-abs/list-map] (possibly using [drip] from zexy inside [list-map] instead of [list-drip] for efficiency)

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/8http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/8Tue, 24 May 2022 21:22:02 GMT<![CDATA[Reply to multiply all element of list on Tue, 24 May 2022 21:54:27 GMT]]>@ingox Why not just [$1 $2}? Does [expr] offer anything extra in that case other than increased overhead?

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/9http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/9Tue, 24 May 2022 21:54:27 GMT<![CDATA[Reply to multiply all element of list on Wed, 25 May 2022 05:13:03 GMT]]>@oid True. ;)

]]>http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/10http://forum.pdpatchrepo.info/topic/13946/multiply-all-element-of-list/10Wed, 25 May 2022 05:13:03 GMT