Skip to content

Instantly share code, notes, and snippets.

Jiang Jiang jjgod

Block or report user

Report or block jjgod

Hide content and notifications from this user.

Learn more about blocking users

Contact Support about this user’s behavior.

Learn more about reporting abuse

Report abuse
View GitHub Profile
View Class Clusters
As of iOS 11/macOS High Sierra, and only including ones in Foundation and CoreFoundation
_NSCFString - a CFStringRef or CFMutableStringRef. This is the most common type of string object currently.
- May have 8 bit (ASCII) or 16 bit (UTF-16) backing store
_NSCFConstantString - a compile time constant CFStringRef, like you'd get with @"foo"
- May also be generated by dynamic string creation if matches a string in a pre-baked table of common strings called the StringROM
NSBigMutableString - an NSString backed by a CFStorage ( for faster handling of very large strings
NSCheapMutableString - a very limited NSMutableString that allows for zero-copy initialization. Used in NSFileManager for temporarily wrapping stack buffers.
steipete / SpinlockTestTests.swift
Last active Mar 11, 2020 — forked from RomanTruba/Synchronization_test_iOS_SDK10
Updated for Xcode 8, Swift 3; added os_unfair_lock
View SpinlockTestTests.swift
// SpinlockTestTests.swift
// SpinlockTestTests
// Created by Peter Steinberger on 04/10/2016.
// Copyright © 2016 PSPDFKit GmbH. All rights reserved.
import XCTest
danielpunkass /
Last active Jul 22, 2018
A simple lldb module for adding an "fsa" command to inject F-Script anywhere into any process
Automate loading of F-Script Anywhere into any app.
By Daniel Jalkut - @danielpunkass -
To set up:
0. Make sure you have FScript.framework installed in /Library/Frameworks (
1. Copy this script to ~/.lldb/
2. Add the following to your ~/.lldbinit file:
steipete / Macros.h
Last active Dec 24, 2018
Declare on your main init that all other init methods should call. It's a nice additional semantic warning. Works with Xcode 5.1 and above. Not tested with earlier variants, but should just be ignored. A reference to this macro shortly appeared in…
View Macros.h
#if __has_attribute(objc_designated_initializer)
#define NS_DESIGNATED_INITIALIZER __attribute((objc_designated_initializer))
landonf /
Last active Jan 1, 2016
Every time I hit something that annoys me in Xcode, I add the feature/UX improvement/change I'd like to the list.

Xcode Wish List:

Legacy Support

  • Additional optional downloads:
    • Older SDKs, eg, for building ancient projects.
    • Older compilers (for same).
  • Either ship gcc/llvm-gcc or don't. Don't ship clang and call it 'gcc', that just breaks anyone who actually needs GCC and finds your not-gcc in the PATH.


Project/File Navigation

View gist:4554824
# Usage: git-unmerged branch1 branch2
# Shows all the non-common commits in the two branches, where non-common
# commits means simply commits with a unique commit *message*.
proc getlog branch {
lrange [split [exec git log $branch --oneline] "\n"] 0 400
tony4d /
Created Aug 24, 2012
Setup p4merge as a visual diff and merge tool for git
sazameki / RVNReceiptValidation.m
Created Jul 1, 2012
Mac App Store Receipt Validation Sample (Mac OS X 10.7)
View RVNReceiptValidation.m
// RVNReceiptValidation.m
// Created by Satoshi Numata on 12/06/30.
// Copyright (c) 2012 Sazameki and Satoshi Numata, Ph.D. All rights reserved.
// This sample shows how to write the Mac App Store receipt validation code.
// Replace kRVNBundleID and kRVNBundleVersion with your own ones.
// This sample is provided because the coding sample found in "Validating Mac App Store Receipts"
kgn /
Created Oct 5, 2010
Python function to zip up a directory and preserve any symlinks and empty directories.
import os
import zipfile
def ZipDir(inputDir, outputZip):
'''Zip up a directory and preserve symlinks and empty directories'''
zipOut = zipfile.ZipFile(outputZip, 'w', compression=zipfile.ZIP_DEFLATED)
rootLen = len(os.path.dirname(inputDir))
def _ArchiveDirectory(parentDirectory):
contents = os.listdir(parentDirectory)
You can’t perform that action at this time.