bolry’s gists

bolry / CMakeLists.txt

Created April 15, 2018 08:32

Example of using copy and "generator" with CMake-files

	cmake_minimum_required(VERSION 3.11)
	project(LearningCMake)

	set(Hmm "${CMAKE_CURRENT_BINARY_DIR}/hmm.cpp")
	set(Foo "${CMAKE_CURRENT_BINARY_DIR}/foo.cpp")
	set(Bar "${CMAKE_CURRENT_BINARY_DIR}/bar.cpp")

	add_executable(LearningCMake ${Hmm} "${Foo}" "${Bar}")

	add_custom_command(OUTPUT ${Hmm}

bolry / print_enum.h

Created February 4, 2018 14:33

Print enum i C++11 and later

	template<typename OStream, typename Enum>
	OStream& print_enum(OStream& os, Enum const e)
	{
	static_assert(std::is_enum<Enum>::value, "not a enumerator");
	return os << static_cast<typename std::underlying_type<Enum>::type>(e);
	}

bolry / __cxa_demangle_example.cpp

Created January 7, 2018 11:24

Example use of __cxa_demangle with no memory leaks

	// Original example from https://gcc.gnu.org/onlinedocs/libstdc++/manual/ext_demangling.html

	#include <cmath>
	#include <cstdlib>
	#include <array>
	#include <exception>
	#include <iostream>
	#include <sstream>
	#include <stdexcept>
	#include <cxxabi.h>

bolry / check_compiler_typedefs.c

Created December 30, 2017 11:08

Let compiler check you typedefs

bolry / cmakefile.txt

Created September 10, 2017 10:19

CMake stuff

	Example of settings to CMake I use

	Overrides RelWithDebugInfo from '-O2' to '-Og'
	Also sets TYPE to 'Debug'
	And example of setting the Eclipse executable path.

	alias ncmake='CXX=g++ CC=gcc cmake -DCMAKE_C_FLAGS_RELWITHDEBINFO="-Og -g -DNDEBUG" -DCMAKE_CXX_FLAGS_RELWITHDEBINFO="-Og -g -DNDEBUG" -DCMAKE_BUILD_TYPE=Debug -DCMAKE_ECLIPSE_MAKE_ARGUMENTS=-v -DCMAKE_ECLIPSE_EXECUTABLE=/home/bo/eclipse/cpp-mars/eclipse/eclipse -DCMAKE_ECLIPSE_VERSION:STRING="4.5 (Mars)" -G "Eclipse CDT4 - Ninja"'

bolry / capturestream.cpp

Created May 22, 2017 12:11

Temporary Capture stream

	class CaptureStream {
	private:
	std::basic_ios<char>& m_stream;
	std::streambuf* m_orig_streambuf;
	std::stringstream m_buffer;

	CaptureStream(CaptureStream const&) = delete;
	CaptureStream& operator=(CaptureStream const&) = delete;
	public:
	CaptureStream(std::basic_ios<char>& stream) :

bolry / kkloepper_fav.cpp

Last active June 14, 2022 18:21

C++11 Stopwatch

	class Stopwatch {
	using clock = std::chrono::high_resolution_clock;
	bool is_running() const { return stop_time_ == clock::time_point::min(); }
	clock::time_point end_time() const { return is_running() ? clock::now() : stop_time_; }
	clock::time_point begin_time_{clock::now()}, stop_time_{clock::time_point::min()};
	public:
	void stop() { if (is_running()) stop_time_ = clock::now(); }
	clock::duration elapsed() const { return end_time() - begin_time_; }
	};

bolry / hsutter_fav3lines.cpp

Created January 8, 2017 22:17

Meyers singelton, does destruction!

bolry / hsutter_fav.cpp

Last active January 8, 2017 22:14

A complete reference-counted object cache

	shared_ptr<widget> get_widget(int id) {
	static map<int, weak_ptr<widget>> cache;
	static mutex m;

	lock_guard<mutex> hold(m);
	auto sp = cache[id].lock();
	if (!sp) cache[id] = sp = load_widget(id);
	return sp;
	}

bolry / main.cpp

Last active November 3, 2016 20:53

C++ main implementation

	#include <cstdio>
	#include <cstdlib>
	#include <exception>
	#include <iostream>
	#include <new>

	#define CATCH_UNHANDLED 0

	#define TOOL_NAME "<your tool name here>"
	char const KToolName[] = TOOL_NAME;

Bo Rydberg bolry