Catfish-Man

#import <stdlib.h>
#import <malloc/malloc.h>

#define SLOW 1

int main(int argc, const char * argv[]) {
#if SLOW
  int sizes[] = { 256032, 512032, 1024032, 1792032 };
  
  for (int ii = 0; ii < 10000; ii++) {

Catfish-Man

/*
Shell version:

paste -d , oldoutput.txt output.txt | awk -F "," '{printf "%s %s %s %f\n", $2, $8, $16, $8 / $16}' | sort -k4 | egrep -v "(1\.0|0\.9[1-9])"
*/

import Foundation

// "paste -d , oldfile.txt newfile.txt"
let paths = CommandLine.arguments[1...2].map(URL.init(fileURLWithPath:))

Catfish-Man

func g(_ x: inout Int) {
    x = x * x
}

func f() { 
     var computed:Int { 
         get { return 5 } 
         set { print(newValue) } 
     } 
     g(&computed) 

Catfish-Man

//compile with "clang -framework Foundation -arch i386 failbuzz.m -o FizzBuzz"
//Yes, it only works in 32 bit
//No, I can't fix it to work correctly past 12 without coming up with a new implementation strategy, 
//or compiling a new CoreFoundation that caches more CFNumbers (…I did do that to be sure it worked though)

#import <Foundation/Foundation.h>
#import <libgen.h>

static void setup(const char * argv[]) {
    for (int i = 1; i <= 100; i++) {

Catfish-Man

//Given this:
NSArray *objects = @[@1, @2, @3]

//These are equivalent in behavior
NSNumber *first = [objects objectAtIndex:0]
NSNumber *second = (NSNumber *)CFArrayGetValueAtIndex(objects, 0)

//But is the code that runs the same? Not so much… in the first one we do…
objc_msgSend(objects, <selector reference>, 0)
-> http://sealiesoftware.com/msg/x86-mavericks.html

Catfish-Man

#!/usr/sbin/dtrace -q -s

/*
set(char *key, char *domain, char *user, char *host, char *container, char *value)
*/
CFPreferences$target:::set {
   printf("Set request at %Y ( key: %s, domain: %s, user:%s, host: %s, container: %s, value: %s)\n", walltimestamp, copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), copyinstr(arg3), copyinstr(arg4), copyinstr(arg5));
   ustack();
   printf("\n\n\n");
}

Catfish-Man

#import <Foundation/Foundation.h>
#import <time.h>
#import <os/lock.h>

#define ITERS 2000
#define NSEC_PER_ITER(time) (((double)time * (double)NSEC_PER_SEC) / (double)ITERS)

#define TEST(body, name) do {\
    start = [NSDate date];\
    for (int i = 0; i < ITERS; i++) {\

Catfish-Man

//  Created by David Smith on 5/29/17.
//  Copyright © 2017 Unseen University. All rights reserved.
//
//  Localization- and encoding-safe solution to Coraline Ada's challenge here: https://twitter.com/CoralineAda/status/869204799027372032
//  Very lightly tested. Probably contains bugs.

import Foundation

func tweetStorm(input uncanonicalizedInput:String, handle:String?) -> [String] {
    let input = uncanonicalizedInput.precomposedStringWithCanonicalMapping //twitter requires NFC

Catfish-Man

static id cachedObject;
static NSLock *lock;

id getCachedObject() {
    [lock lock];
    id result = [cachedObject retain];
    [lock unlock];
    return result;
}

Catfish-Man

We're a group of tech employees (@Catfish_Man, @jnadeau, @numist, @jauricchio, and @daagaak) interested in making sure
as many people as possible survive the current state of US politics. For each dollar we donate, our employer
will donate two. We're pooling our resources to do the same for you, so for each dollar you donate to the 
orgs below, we'll also donate one dollar to those orgs, and our employer will donate two: quadruple your donation!
We have $45k set aside for this, so we'll keep matching donations until we've matched that much or 72 hours have passed.

You can send me a tweet/DM (@Catfish_Man) with a screenshot of evidence that you donated (receipt page, whatever works, we're not picky).

Southern Poverty Law Center
Council on American-Islamic Relations