Ben Deane elbeno

elbeno / emacs-cppcon-2018.org

Created September 30, 2018 02:33

Mini emacs presentation for CppCon 2018

	# -- mode: org --
	#+OPTIONS: reveal_center:t reveal_progress:t reveal_history:t reveal_control:t
	#+OPTIONS: reveal_mathjax:t reveal_rolling_links:nil reveal_keyboard:t reveal_overview:t num:nil
	#+OPTIONS: reveal_width:1600 reveal_height:900
	#+OPTIONS: toc:nil ^:nil <:nil timestamp:nil email:t reveal_slide_number:"c/t"
	#+REVEAL_MARGIN: 0.1
	#+REVEAL_MIN_SCALE: 0.5
	#+REVEAL_MAX_SCALE: 2.5
	#+REVEAL_TRANS: none
	#+REVEAL_THEME: blood

elbeno / ykloc.awk

Last active June 19, 2018 09:20

ykloc: measure year-kilo-lines-of-code per author

	{
	# fields between ( and )
	start = index($0, "(") + 1
	len = index($0, ")") - start
	$0 = substr($0, start, len)

	# field n-2 is the timestamp
	line_age = systime() - $(NF - 2)
	# fields before timestamp are author
	author = $1

elbeno / req_fields.cpp

Last active April 5, 2018 17:02

Setting required fields & optional fields in a type safe way

elbeno / scmchallenge_cppcon2017.cpp

Created September 29, 2017 14:21

Herb Sutter's SCM Challenge at CppCon 2017 - my winning code

elbeno / exchange_for_move_operations.cpp

Created September 17, 2017 17:33

Using std::exchange to implement move construction/assignment

elbeno / overload.h

Last active July 27, 2017 22:17

Vittorio's overload_set

elbeno / pi_approx.cpp

Created March 5, 2017 22:46

Expressive code to (poorly) approximate pi

	// 2017 Pi Day challenge:
	// http://www.fluentcpp.com/2017/03/02/the-pi-day-challenge-for-expressive-code-in-c/

	#include <algorithm>
	#include <array>
	#include <cmath>
	#include <functional>
	#include <iomanip>
	#include <iostream>
	#include <random>

elbeno / constexpr_u64.cpp

Created January 23, 2017 18:50

constexpr u64 mul/add, avoiding overflow warnings on VC++

	constexpr uint64_t lo(uint64_t x) { return x & UINT64_C(0xffffffff); }
	constexpr uint64_t hi(uint64_t x) { return x >> 32; }

	constexpr uint64_t mulu64(uint64_t a, uint64_t b)
	{
	return lo(lo(a) * lo(b))
	+ (lo(hi(lo(a) * lo(b))
	+ lo(a) * hi(b)
	+ hi(a) * lo(b)) << 32);
	}

elbeno / int_range.cpp

Created November 22, 2016 17:27

Integral ranges with initializer_lists and parameter packs

	#include <cstddef>
	#include <iostream>
	#include <type_traits>
	#include <utility>

	using namespace std;

	template <typename T, T Start, T... Ts>
	const auto& make_int_range_helper(std::integer_sequence<T, Ts...>) {
	static const initializer_list<int> il{ (Start+Ts)...};

elbeno / random_duration.cpp

Last active November 14, 2016 14:59

Uniform distributions with chrono durations