Last Updated: February 25, 2016
·
323
· trustyfrog

Key-Value collection operators

#ios
#kvc

The key-value collection operators are a really useful way to perform operations on collections of data.

NSNumber *amountSum = [transactions valueForKeyPath:@"@sum.amount"];

IMHO it beats iterating over a for-loop and maintaining the sum.

Key-Value Coding Programming Guide

#ios
#kvc

Written by Scott

Say Thanks
Respond

Related protips

When to use Delegation, Notification, or Observation in iOS

1.534K
0

Customize navigation bar appearance with swift

339.3K
15

Swift: Instantiate a view controller using its Storyboard name in Xcode

151.1K
0

Have a fresh tip? Share with Coderwall community!

Post
Post a tip
Best #Ios Authors
itseranga
499.8K
#ios
#cryptography
#docker
anthonylevings
312.5K
#ios
#php
#Objective-C
_jeffreyjackson
235.6K
#ios
#C#
#Xcode
kanshuYokoo
155K
#ios
#Javascript
#react redux
chrishannah
123.4K
#ios
#Objective-C
#Open Source
Related Tags
#ios
#kvc
Sponsored by
#native_company#
#native_desc#
#native_cta#
Filed Under
iOS Development Tips
Awesome Job
See All Jobs
Post a job for only $299
Thanks to our sponsor
Sponsored by #native_company# — Learn More
#native_title# #native_desc#
#native_cta#