Skifary

#import <Foundation/Foundation.h>

#import "ffi.h"

NSMutableArray *g_allocations;
ffi_cif g_cif;
ffi_closure *g_closure;
void *g_replacement_invoke;
void *g_origin_invoke;

Skifary

#import <Foundation/Foundation.h>

typedef struct __block_impl {
    void *isa;
    int Flags;
    int Reserved;
    void *FuncPtr;
}__block_impl;

typedef void(^GlobalBlock)(void);

nzatsepilov

START_DATE=$(date +"%s")

SWIFT_LINT=/usr/local/bin/swiftlint

# Run SwiftLint for given filename
run_swiftlint() {
    local filename="${1}"
    if [[ "${filename##*.}" == "swift" ]]; then
    ${SWIFT_LINT} lint --path "${filename}"
    fi

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)

tkersey

Quick access

• The Dao of Functional Programming

2026

February

• "Five-Point Haskell": Total Depravity (and Defensive Typing)

  Total depravity is all about using types to prevent errors. However, you can only go so far with defensive programming and carefully picking the structure of your types. Sometimes, it feels like you are expending a lot of energy and human effort just picking the perfectly designed data type, only for things out of your hand to ruin your typed castle.

> In the next chapter, we’ll see how a little-discussed aspect of Haskell’s type system gives you a powerful tool for opening your mind to new avenues of design that were impossible before. At the same time, we’ll see how we can leverage universal properties of mathematics itself to help us analyze our code in unexpected ways.

steipete

PSPDF_EXTERN BOOL PSPDFIsBlock(id _Nullable block) {
    static Class blockClass;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        blockClass = [^{} class];
        while ([blockClass superclass] != NSObject.class) {
            blockClass = [blockClass superclass];
        }
    });