Harold Harold2017

# install vcpkg
git clone https://github.com/Microsoft/vcpkg
cd vcpkg
./bootstrap-vcpkg.sh -disableMetrics
sudo ln -s /xxx/vcpkg/vcpkg /usr/local/bin
vcpkg help

# use it in CMakeLists.txt
set(ENV{VCPKG_ROOT} "/xxx/vcpkg/vcpkg")

cmake

compile libtcmalloc_minimal with Release-Patch

link libtcmalloc_minimal.lib in CMakeList

copy libtcmalloc_minimal.dll to execution folder

without cmake

replace Homebrew git repo

git -C "$(brew --repo)" remote set-url origin https://mirrors.ustc.edu.cn/brew.git

replace Homebrew Core git repo

git -C "$(brew --repo homebrew/core)" remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git

replace Homebrew Cask git repo

git -C "$(brew --repo homebrew/cask)" remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git

replace Homebrew-bottles

Qt without Xcode

How to use Qt Creator for software development on macOS without having to install Xcode

Justification

Qt refuses to install on macOS unless Apple's Xcode is installed beforehand. This is unfortunate because:

	FROM nvidia/cuda:10.1-devel-ubuntu18.04
	MAINTAINER Harold

	# GCC 9
	RUN apt-get update && apt-get install -y software-properties-common
	RUN add-apt-repository ppa:ubuntu-toolchain-r/test && \
	apt update && \
	apt install -y gcc-9-offload-nvptx g++-9 && \
	update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 60 --slave /usr/bin/g++ g++ /usr/bin/g++-9

	BenchmarkMutexCache/10-8 10000000 180 ns/op 0 B/op 0 allocs/op
	BenchmarkMutexCache/100-8 10000000 187 ns/op 0 B/op 0 allocs/op
	BenchmarkMutexCache/1000-8 10000000 214 ns/op 0 B/op 0 allocs/op
	BenchmarkMutexCache/10000-8 10000000 231 ns/op 0 B/op 0 allocs/op
	BenchmarkMutexCache/100000-8 5000000 254 ns/op 2 B/op 0 allocs/op
	BenchmarkMutexCache/1000000-8 1000000 1159 ns/op 102 B/op 1 allocs/op
	BenchmarkMutexCache/10000000-8 1000000 1481 ns/op 184 B/op 2 allocs/op
	BenchmarkMutexCache/100000000-8 1000000 1655 ns/op 187 B/op 3 allocs/op

	BenchmarkSyncMapCache/10-8 5000000 221 ns/op 0 B/op 0 allocs/op

	C++ 3 hrs 24 mins ██████████████████▍░░ 87.7%
	JSON 15 mins █▍░░░░░░░░░░░░░░░░░░░ 6.7%
	CMake 12 mins █░░░░░░░░░░░░░░░░░░░░ 5.3%
	Other 0 secs ░░░░░░░░░░░░░░░░░░░░░ 0.2%
	C 0 secs ░░░░░░░░░░░░░░░░░░░░░ 0.1%

	template<class Vector3>
	std::pair<Vector3, Vector3> best_plane_from_points(const std::vector<Vector3> & c)
	{
	// copy coordinates to matrix in Eigen format
	size_t num_atoms = c.size();
	Eigen::Matrix< Vector3::Scalar, Eigen::Dynamic, Eigen::Dynamic > coord(3, num_atoms);
	for (size_t i = 0; i < num_atoms; ++i) coord.col(i) = c[i];

	// calculate centroid
	Vector3 centroid(coord.row(0).mean(), coord.row(1).mean(), coord.row(2).mean());

	mysql> create database db_name;
	mysql> use db_name;
	mysql> set autocommit=0;
	mysql> source dump_file.sql;
	mysql> commit;

	// A simple quickref for Eigen. Add anything that's missing.
	// Main author: Keir Mierle

	#include <Eigen/Dense>

	Matrix<double, 3, 3> A; // Fixed rows and cols. Same as Matrix3d.
	Matrix<double, 3, Dynamic> B; // Fixed rows, dynamic cols.
	Matrix<double, Dynamic, Dynamic> C; // Full dynamic. Same as MatrixXd.
	Matrix<double, 3, 3, RowMajor> E; // Row major; default is column-major.
	Matrix3f P, Q, R; // 3x3 float matrix.