ddunbar

New Build System Tricks

Command Line

alias xcbuild=$(xcode-select -p)/../SharedFrameworks/XCBuild.framework/Versions/A/Support/xcbuild
# THIS DOESNT WORK YET: xcbuild openIDEConsole  # … then switch to Xcode ➡️
xcbuild showSpecs
xcbuild build <foo.pif> [—target <target>]

inamiy

React & Elm inspired frameworks in Swift

This is a curated list of iOS (Swift & ObjC) frameworks which are inspired by React and Elm.

Swift frameworks

React-inspired

• ReactSwift by @ColinEberhardt
• https://github.com/ColinEberhardt/ReactSwift

GoatHunter

"""
Prerequisites:
$ pip install biplist
$ pip install requests

Usage:
python dsym_symbolizer.py --dsym_url https://www.example.com/MyStuff.framework.dSYM.zip \
                          --source_path /Users/MeMySelfAndI/MyStuffSources \
                          --binary_path /Users/MeMySelfAndI/MyProject/Pods/MyStuff/MyStuff.framework
"""

kbilsted

Moved to https://github.com/kbilsted/Functional-core-imperative-shell/blob/master/README.md

steipete

// clang -cc1 -analyzer-checker-help
// OVERVIEW: Clang Static Analyzer Checkers List
// USAGE: -analyzer-checker <CHECKER or PACKAGE,...>
// 
// CHECKERS:
//   alpha.core.BoolAssignment       Warn about assigning non-{0,1} values to Boolean variables
//   alpha.core.CallAndMessageUnInitRefArg
//                                   Check for logical errors for function calls and Objective-C message expressions (e.g., uninitialized arguments, null function pointers, and pointer to undefined variables)
//   alpha.core.CastSize             Check when casting a malloc'ed type T, whether the size is a multiple of the size of T
//   alpha.core.CastToStruct         Check for cast from non-struct pointer to struct pointer

steipete

PLATFORM AND VERSION
iOS
Xcode 8b6

DESCRIPTION OF PROBLEM
I'm trying to customize ASAN_OPTIONS based on 
https://github.com/google/sanitizers/wiki/AddressSanitizer

Specifically, I am trying to run without the new odr detection because this seems to be buggy:

andymatuschak

A composable pattern for pure state machines with effects

State machines are everywhere in interactive systems, but they're rarely defined clearly and explicitly. Given some big blob of code including implicit state machines, which transitions are possible and under what conditions? What effects take place on what transitions?

There are existing design patterns for state machines, but all the patterns I've seen complect side effects with the structure of the state machine itself. Instances of these patterns are difficult to test without mocking, and they end up with more dependencies. Worse, the classic patterns compose poorly: hierarchical state machines are typically not straightforward extensions. The functional programming world has solutions, but they don't transpose neatly enough to be broadly usable in mainstream languages.

Here I present a composable pattern for pure state machiness with effects,

steipete

# The trick is to link the DeviceSupport folder from the beta to the stable version.
# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

# (A similar approach works for older versions too, just change the version number after DeviceSupport)

Catfish-Man

// Compile with clang -framework Foundation sethack.m

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

/*
 CFHashBytes from http://www.opensource.apple.com/source/CF/CF-1153.18/CFUtilities.c
 */
#define ELF_STEP(B) T1 = (H << 4) + B; T2 = T1 & 0xF0000000; if (T2) T1 ^= (T2 >> 24); T1 &= (~T2); H = T1;

uliwitness

You can specify the underlying name for a C function the linker/compiler should actually use. If you use an existing
function's name, it will just let you refer to it with your prototype's name. If you define the function, it'll give
it that name. It even complains if a function of that name already exists. Tested with clang on a Mac, but AFAIK also
works in GCC. You can even use special characters in your function names, like you can do in assembly.