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func observeNotifications(name: NSNotification.Name) -> AnyPublisher<Notification, Never> {
    return Publishers.Deferred<AnyPublisher<Notification, Never>> {
        var observer: NSObjectProtocol?
        return AnyPublisher { subscriber in
            observer = NotificationCenter.default.addObserver(forName: name, object: nil, queue: nil) { notification in
                _ = subscriber.receive(notification)
            }
        }
        .handleEvents(receiveCancel: {
            if let observer = observer {

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# Calling functions
expression CATransaction.flush()
call CATransaction.flush()

# Assigning variables
expression didLoad = true
command alias assign expression --
assign didLoad = true

# Symbolic breakpoints

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##
## Python commands before
##

def my_command(debugger, input, ctx, result, _):
    # do stuff
    pass

def __lldb_init_module(debugger, _):
    debugger.HandleCommand(

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swift_demangle(Symbol, Name) :-
    Command = ['swift-demangle', '-compact', Symbol],
    setup_call_cleanup(
        process_create(path(xcrun), Command, [stdout(pipe(Out))]),
        read_string(Out, "\n", "", _, Name),
        close(Out)
    ).

usr_symbol(USR, Symbol) :-
    (

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import re
import __builtin__
from itertools import islice

# See https://sourceware.org/gdb/current/onlinedocs/gdb/Convenience-Funs.html

# breakpoint command add -F '_caller_is("theCaller")'
# breakpoint command add -F 'not _caller_is("theCaller")'
def _caller_is(name):
    def check(frame, loc, _):

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/*
 * This is an example provided by Facebook are for non-commercial testing and
 * evaluation purposes only.
 *
 * Facebook reserves all rights not expressly granted.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
 * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

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# Examples:
#   hdrtomod objc/runtime.h
#   hdrtomod mach-o/dyld.h
#   hdrtomod Foundation/Foundation.h
hdrtomod() {
  readonly header=$1
  echo "#import <$header>" \
    | clang -fmodules -fsyntax-only -x objective-c -Xclang -ast-dump - \
    | grep ImportDecl \
    | egrep -o 'implicit \S+'

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b hitTest:withEvent:
break command add -s python -o 'print frame.EvaluateExpression("$arg1").description; return False'

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#import <Foundation/Foundation.h>
#import <libkern/OSAtomic.h>

@interface NSArray (ConcurrentMap)
- (NSArray*)semaphore_map:(id (^)(id))block;
- (NSArray*)serial_map:(id (^)(id))block;
- (NSArray*)spinlock_map:(id (^)(id))block;
@end

@implementation NSArray (ConcurrentMap)

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void (^myBlock)(int);
__block __weak __typeof__(myBlock) myRecursiveBlock = myBlock = ^(int x) {
    if (x > 5) {
        return;
    } else {
        myRecursiveBlock(x + 1);
    }
};

myBlock(1);