Guo Shuai ZJUGuoShuai

给 ComputeShader class 增加以下三个方法：

// 从 OpenCV Mat 创建（只读的） Metal Texture
- (id<MTLTexture>) textureFromCVMat:(const void*)cv_data Width:(int) w Height:(int)h {
  // Create a Metal texture descriptor
  MTLTextureDescriptor *textureDescriptor = [MTLTextureDescriptor texture2DDescriptorWithPixelFormat:MTLPixelFormatR8Unorm
                                                                                               width:w
                                                                                              height:h
                                                                                           mipmapped:NO];

C++ STL 中的 std::swap 通常是如何实现的？

C++11 之前，只能使用拷贝构造和拷贝赋值：

template <typename T>
void swap(T& a, T& b) {
  T t = a;
  b = a;
 b = t;

基本版本

class Singleton {
  Singleton() = default;

 public:
  Singleton(const Singleton&)            = delete;
  Singleton& operator=(const Singleton&) = delete;

	import Cocoa

	let input: [Float] = [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0]
	var output_real = Array<Float>(repeating: 0, count: 8)
	var output_imag = Array<Float>(repeating: 0, count: 8)

	for i in 0..<8 {
	var real_sum: Float = 0.0
	var imag_sum: Float = 0.0
	for k in 0..<8 {

	#include <limits>
	#include <iostream>

	int main() {
	float eps = std::numeric_limits<float>::epsilon();
	float a = 1.0f;
	float b = a + eps;
	float c = a + eps / 2.0f;
	std::cout << "a == b: " << std::boolalpha << (a == b) << "\n"; // false
	std::cout << "a == c: " << std::boolalpha << (a == c) << "\n"; // true

	def sample(img, x: float, y: float):
	h, w = img.shape

	left = math.floor(x)
	top = math.floor(y)
	right = left + 1
	bottom = top + 1

	# top left corner
	if (0 <= left < w) and (0 <= top < h):

	template <typename T>
	class vector {
	size_t size_ = 0;
	size_t capacity_ = 0;
	T* data_ = nullptr;

	public:
	// Default constructor
	vector() = default;

	void showOpenCVMat(cv::Mat img, UIImageView* imageView) {
	cv::Mat converted;
	img.convertTo(converted, CV_8U);
	// convert the cv::Mat to UIImage
	NSData data = [NSData dataWithBytes:converted.data length:converted.elemSize() converted.total()];
	CGColorSpaceRef colorSpace =
	CGColorSpaceCreateDeviceGray(); // CGColorSpaceCreateDeviceRGB();
	CGDataProviderRef provider =
	CGDataProviderCreateWithCFData((__bridge CFDataRef)data);
	CGImageRef imageRef = CGImageCreate(

	""" 如何让 Matplotlib 正确显示中文 """

	""" 第一步：通过字体路径创建一个字体属性对象 """
	from matplotlib.font_manager import FontProperties

	my_font = FontProperties(fname='/Path/To/Your/Font.ttf')

	""" 第二步：在所有需要显示中文的绘图命令中增加 fontproperties=my_font 或 prop=my_font 参数 """

	plt.xlabel('线程池线程数', fontproperties=my_font)

	"""
	表明：批次矩阵乘法等价于一种特殊的 Conv1D
	"""
	import torch

	N = 2
	Cin = 3
	Lin = 4
	Cout = 5