yohhoy’s gists

yohhoy / TypeSafeBridge.md

Last active June 22, 2019 00:46

// callee.m iOS Native(Objective-C) class
@interface NativeType
- (void)method:(int)arg;
@end

@implementation NativeType
// ...
@end

yohhoy / invokeObjC.c

Created June 14, 2019 18:44

invoke Obj-C from pure-C

	#include <stdlib.h>
	#include <stdio.h>
	#include <string.h>
	#include <ctype.h>
	#include <objc/message.h>


	SEL sel_propSetter(Class clazz, const char* pname)
	{
	char* attr = property_copyAttributeValue(class_getProperty(clazz, pname), "S");

yohhoy / ver.cpp

Created April 18, 2019 15:57

compiler version snippet

	#if defined(__clang__)
	#pragma message "Clang " __VERSION__
	#elif defined(__GNUC__)
	#pragma message "GCC " __VERSION__
	#elif defined(_MSC_VER)
	// https://qiita.com/yumetodo/items/8c112fca0a8e6b47072d
	#define STR(s) #s
	#define DUMP(s) #s "=" STR(s)
	#pragma message ("MSVC " DUMP(_MSC_VER) " " DUMP(_MSC_FULL_VER))
	#endif

yohhoy / loop1.rs

Created December 5, 2018 02:48

https://qiita.com/flare/items/96bccb590365ed09548e

	// for i in 0..v.len() {sum += v[i];}
	// https://play.rust-lang.org/?version=stable&mode=release&edition=2015&gist=a234fd242a39e0e33d1775ba986a7f50
	playground::main:
	pushq %r14
	pushq %rbx
	subq $152, %rsp
	movq $0, 16(%rsp)
	movl $800000000, %edi
	movl $8, %esi
	callq __rust_alloc@PLT

yohhoy / yuvrgb.md

Last active September 24, 2025 06:32

RGB <=> YCbCr(YPbPr) color space conversion

Y  = a * R + b * G + c * B
Cb = (B - Y) / d
Cr = (R - Y) / e

	BT.601	BT.709	BT.2020
a	0.299	0.2126	0.2627
b	0.587	0.7152	0.6780

yohhoy / unscoped_enum.rs

Created July 30, 2018 13:30

UnscopedEnum

	//--------------------------------------------------------
	#[derive(Debug, PartialEq, Eq, Copy, Clone)]
	#[repr(u8)]
	enum UnscopedEnum {
	AAA = 1,
	BBB = 2,
	CCC = 3,
	}

	const AAA: UnscopedEnum = UnscopedEnum::AAA;

yohhoy / as_num.rs

Created July 6, 2018 07:45

Numeric cast (as operator) in generics

yohhoy / so45180.py

Created June 30, 2018 07:43

	#!/usr/bin/env python3
	# https://ja.stackoverflow.com/questions/45180/
	import numpy as np
	import matplotlib.pyplot as plt
	from mpl_toolkits.mplot3d import Axes3D
	import matplotlib.colors as colors

	n = 10
	x_list = np.array(list(range(n*2)))
	t_list = np.array(list(range(n*2)))

yohhoy / m2tsdump.sh

Created June 6, 2018 06:19

hexdump MPEG-2 TS/PAT

	# PAT(PID=0x0000)
	xxd -s ${offset} -c 188 -ps input.ts \| grep -E "^47[46]000"

yohhoy / sleepsort2.cpp

Last active August 10, 2019 05:14

"Sleep Sort" implementation with C++ Coroutines TS

	#include <condition_variable>
	#include <chrono>
	#include <iostream>
	#include <mutex>
	#include <thread>
	#include <utility>
	#include <vector>
	#include <experimental/coroutine>

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