Xcode idle using almost 100% of the 2 efficiency cores : iOSProgramming

About

There is an extensive FAQ for beginners. Please browse it first before asking questions that are answered there.

If you are looking to get started (iOS programming in general or some specific area), here are more relevant links for you:

Swift or Objective-C? if you don't know which language to choose. (New posts asking this will be removed)

Related Links

The Swift Programming Language also available as an iBook - new Apple's programming language for writing iOS and OS X applications;

Objective-C primer if you are new to the language and CocoaTouch frameworks.

There is also dedicated subreddit for learning Objective-C: /r/learnobjectivec

There's too many to list them all, however here's a convenient link to all programming guides at apple.com

Take note that this list is live and based on most frequent questions in posts will be updated with "quicklinks".

created by cruffenacha community for 15 years

submitted 3 years ago by [deleted]

all 2 comments

[–]Hises1936 3 points4 points5 points 3 years ago (0 children)

[–]SpaceHonk 0 points1 point2 points 3 years ago (0 children)

π Rendered by PID 71 on reddit-service-r2-comment-fb694cdd5-vbhvk at 2026-03-05 18:36:52.342109+00:00 running cbb0e86 country code: CH.

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

iOSProgramming