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/*
 * Most NSString instances will actually be __NSCFString instances, so here are both NSString and __NSCFString implementations.
 * If you know how to create an NSString instance whose class is actually NSString please let me know.
 * Other possible concrete subclasses of NSString are: NSConstantString, __NSCFConstantString, NSPathStore2, NSSimpleCString and __NSLocalizedString.
 */

// CoreFoundation.framework 635.19.0 (Mac OS X 10.7.3)
@implementation NSObject

- (BOOL) isNSString__

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Structure is [PixelFormatTitle: DescriptionDictionary]. PixelFormatTitle is the kCVPixelFormatType_ suffix (if known) and the FourCharCode as a string or int if the string is too short.

[["32ARGB / 32": {
    BitsPerBlock = 32;
    BitsPerComponent = 8;
    BlackBlock = <ff000000>;
    CGBitmapContextCompatibility = 1;
    CGBitmapInfo = 16388;
    CGImageCompatibility = 1;
    ContainsAlpha = 1;

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{
    /* ~/Library/KeyBindings/DefaultKeyBinding.dict

        See https://gist.github.com/zsimic/1367779, prefix cheatsheet:
        Char Short Key
        $    S-    Shift ⇧
        ^    C-    CTRL ⌃
        ~    O-    Option ⌥ (⊞ Win key position on PC)
        @    M-    Command ⌘ (Alt position on PC)
        #          Numeric Keypad

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CC=gcc

all: multi-process-counter

build: multi-process-counter

multi-process-counter:
	${CC} -std=c99 -o multi-process-counter multi-process-counter.c
	#${CC} -std=c99 -arch x86_64 -o multi-process-counter multi-process-counter.c

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//
//  Created by Yogesh Swami on 2/24/12.
//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//

// 
// clang -Wall -Wextra -Wall -o mach_semaphore mach_semaphore.c
//

// using mach semaphore for mutually signalling between two threads.

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UIView Drawing Model

-[UIView setNeedsDisplay]

You have some kind of custom UIView which implements some awesome drawing in -[UIView drawRect:]. In order to have UIKit draw it for you, you send the -[UIView setNeedsDisplay] to the view object to queue it up for drawing.

-[CALayer setNeedsDisplay]

     *------------*           *------------*

| | | |

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Python Stream object act like Java Stream, features include lazy calculating, slicing, chain-call etc.

stream.py:

import functools
import itertools


class Stream(object):

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How to download and view legacy documentation from Apple (no need to sign in to your dev account)

1. Download the docset index XML.
2. Find the docset you want (there are some with URL https://apple.com/none.dmg; ignore them - you will find them again further down the file with a working URL).
3. Download the dmg. It's probably around a gigabyte or so.
4. "Install" the .pkg file somewhere on your disk. If you don't trust the installer, do it manually:
   1. Find the largest file, named Payload, and extract it using The Unarchiver.
   2. This creates a new, even larger file, probably named Payload-1.
   3. Extract Payload-1 using The Unarchiver.
5. After many minutes of extracting, we have our .docset file.

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// https://twitter.com/_saagarjha/status/1692839886053625917#m

#import <Foundation/Foundation.h>

#import <atomic>
#import <memory>
#import <objc/runtime.h>
#include <objc/message.h>
#import <stdexcept>
#import <iostream>

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TDP and turbo parameter modification with MSR on non-overclockable CPU

Disclaimer

• MSR modification may void your CPU's (or system board's) warranty. Proceed with care. I'm not responsible for any destruction caused by this article.
• MSR address (greatly) differs from CPU to CPU. Check your own CPU's MSR address using Intel's documentation.
• Only tested on Intel i7-8550U (Kaby Lake R).
• This article is translation of this article. If you can understand Korean, I recommend reading that article, not this.

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