johnezang

JSONKit

Objective-C2011–2014

johnezang / JSONKit

JSONKit

Objective-C JSON

Data & Databases

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9Distinct people

9Mentions

0Explicit recommenders

6.2KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

Objective-C JSON

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year9 dated mentions

Observed mentions: 2011-02-04 00:02:28 UTC to 2014-06-16 03:09:18 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Submissions	Comments
2011	2011-01-01 00:00:00 UTC	2012-01-01 00:00:00 UTC	6	1	5
2012	2012-01-01 00:00:00 UTC	2013-01-01 00:00:00 UTC	2	1	1
2013	2013-01-01 00:00:00 UTC	2014-01-01 00:00:00 UTC	0	0	0
2014	2014-01-01 00:00:00 UTC	2015-01-01 00:00:00 UTC	1	0	1

What Hacker News says

9 sources

mononcqc·Jun 16, 2014

That's not invalid and I don't debate that. JSON is obviously ubiquitous. It's just a bad format. A typical case of worse is better. https://github.com/johnezang/JSONKit has a few interesting corner cases, for example.

In Erlang/OTP – The fastest, cheapest way to build reliable clusters of computers

evadne·Dec 22, 2012

Look at https://github.com/johnezang/JSONKit, which is fast.

In The End of x86? An Update

gerad·Apr 3, 2012Submission

Why JSONKit Won't Support Automatic Reference Counting (ARC)

1 points · Open discussion

schrototo·Jul 23, 2011

Somewhat off-topic, but looking at the readme of JSONKit [1] I found: "At this time, there are no plans to support ARC in JSONKit. Although tenative [sic], it is extremely unlikely that ARC will ever be supported, for many of the same reasons that Mac OS X Garbage Collection is not supported." Which seems kind of weird, seeing as ARC is going to be the default pretty soon. [1] https://github.com/johnezang/JSONKit

In Fast JSON parser for iOS

jparise·May 31, 2011Submission

JSONKit author comments on the JSON Schema draft specification

1 points · Open discussion

bdittmer·May 16, 2011

JSONKit (https://github.com/johnezang/JSONKit) is by far the best JSON parsing library I've seen.

In Ask HN: High Quality iOS Libraries

hiroprot·Mar 15, 2011

JSONKit (https://github.com/johnezang/JSONKit) is quite a bit faster than the mentioned json-framework. Also, an alternative to SDWebImage is EGOImageLoading (https://github.com/enormego/EGOImageLoading), which might or might not be better (Instagram uses it). We've been using both libraries quite happily for our new startup, forkly.

In iOS Libraries

johne·Feb 4, 2011

A JSON parser at ~2K lines: https://github.com/johnezang/JSONKit I'm the author, so I'm obviously biased :). It has strict Unicode standard UTF-8 parsing ("passes" http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt) and has a whiz-bang LRU cache with a clever aging replacement policy that saves lots of time by reusing already seen and instantiated immutable objects (think JSON dictionaries: the keys in "key": value pairs tend to repeat an awful lot). A further benefit is this saves lots of memory too. For converting JSON to 'native' ObjC/Foundation objects, it's faster than the other ObjC JSON libraries by 2-10x (HEAVILY dependent on the JSON being parsed, typical is 2-4x), and serializing ObjC -> JSON is (usually) even faster. So, in short, it's possible to write a very high performance JSON serializer and deserializer in ObjC

Read the rest

in ~2K lines of code. For JSONKit, most it is actually pure C (which in turn uses Core Foundation, which is a pure C API interface version for the equivalent native ObjC objects), with public API ObjC stub bindings making use of the C code.

In What can you do in 2k LOC of C?

Zev·Feb 4, 2011

An JSON / XML / YAML parser? The fastest JSON parser that I know of is implemented in ~1800 lines of Objective-C: https://github.com/johnezang/JSONKit. Its about 2-3x faster than the yajl bindings for Objective-C are, in my testing.

In What can you do in 2k LOC of C?