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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);

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- (void)viewDidLoad
{
    [super viewDidLoad];
    @weakify(self);
    
    self.exploreSearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, mTCTableViewFrameWidth, 44)];
    self.exploreSearchBar.placeholder = @"Search";
    
    [self.exploreSearchBar setBackgroundImage:[UIImage squareImageWithColor:mTCLightTanColor dimension:1] forBarPosition:UIBarPositionAny barMetrics:UIBarMetricsDefault];
    self.tableView.tableHeaderView = self.exploreSearchBar;

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- (RACSignal *)distinct {
    return [RACSignal defer:^{
        NSMutableSet *set = [NSMutableSet new];
        NSObject *nullObject = [NSObject new];

        return [self filter:^(id x) {
            x = x ?: nullObject;
            
            BOOL distinct = ![set containsObject:x];
            if (distinct) [set addObject:x];

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

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void addMainThreadCheck(Class cls, SEL selector) {
#if DEBUG
    void *symbol = dlsym(RTLD_DEFAULT, "__main_thread_add_check_for_selector");
    if (!symbol) {
        return;
    }
    void (*addCheck)(Class, SEL) = (__typeof__(addCheck))symbol;
    addCheck(cls, selector);
#endif
}

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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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wut() {
  readonly error_code=$1
  local domain
  for domain in posix mach; do
    tput bold; echo $domain; tput sgr0
    launchctl error $domain $error_code
  done

  tput bold; echo security; tput sgr0
  security error $error_code

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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