Lists

Terms and Conditions
Lists hosted on this site
Email the Postmaster
Tips for posting to public mailing lists

Calculating a total from a collection of numeric attributes

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Calculating a total from a collection of numeric attributes

Subject: Calculating a total from a collection of numeric attributes
From: Ian Piper <email@hidden>
Date: Sun, 18 Oct 2009 00:40:44 +0100

Hi all,

I have a Core Data entity that has an attribute called charge (stored as a float). So I am storing a number of records each of which has a charge. I simply want to be able to show a running total of charges as I add or remove items. I was hoping that I might be able to use a simple binding for this: I created a label and thought I might be able to bind its value to array controller.arrangedObjects.charge.sum or something like that. No luck though.

I cannot see anything in the documentation or from searches. Can anyone point me towards either examples or documentation?


Thanks,


Ian.
--
_______________________________________________

Cocoa-dev mailing list (email@hidden)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


Follow-Ups:

Re: Calculating a total from a collection of numeric attributes
From: "I. Savant" <email@hidden>


Prev by Date:
Re: standard colors

Next by Date:
Re: GC and atomic getters/setters

Previous by thread:
Re: NSSpellChecker -learnWord: how to specify LocalDictionary

Next by thread:
Re: Calculating a total from a collection of numeric attributes

Index(es):

Date
Thread