oschonrock

#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef char* ht_key_t;
typedef int ht_value_t;

// key => value plus pointer to next item for hash collisions
typedef struct HashTableItem HashTableItem;

oschonrock

#include <Adafruit_NeoPixel.h>
#include <DS3231_Simple.h>

// Which pin on the Arduino is connected to the NeoPixels?
const int LEDCLOCK_PIN = 6;
const int LEDDOWNLIGHT_PIN = 5;

// How many NeoPixels are attached to the Arduino?
const int LEDCLOCK_COUNT = 207;  
const int LEDDOWNLIGHT_COUNT = 12;

oschonrock

// START include/flat_hash_map/flat_hash_map.hpp

//          Copyright Malte Skarupke 2017.
// Distributed under the Boost Software License, Version 1.0.
//    (See http://www.boost.org/LICENSE_1_0.txt)


#include <cstdint>
#include <cstddef>

oschonrock

class Timer
{
public:
  Timer(std::string label_) : start{std::chrono::high_resolution_clock::now()}, label{label_} {};

  ~Timer() { print(); }

  void print() {
    finish = std::chrono::high_resolution_clock::now();
    auto elapsed_ms = std::chrono::duration_cast<std::chrono::duration<double>>(finish - start).count() * 1000;

oschonrock

int main() {
  using Key   = std::string;
  using Value = int;
  SequencedMap<Key, Value> smap;

  // arbitrary ad-hoc temporary structure for the data (for demo purposes only)

  for (auto p: std::vector<std::pair<Key, Value>>{
           {"Mary", 10}, {"Alex", 20}, {"Johnny", 40}, {"Roman", 40}, {"Johnny", 50},
       }) {

oschonrock

// refers to this question of SO:
// https://stackoverflow.com/questions/17465061/how-to-parse-space-separated-floats-in-c-quickly/59013147

#include <iomanip>
#include <iostream>

// for mmap:
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>

oschonrock

// the C++ STL is a mess for parsing numbers from strings, FAST. from_chars looked good but is not implemented in clang/gcc
// crack_atof is a very very fast alternative


// Original crack_atof version is at http://crackprogramming.blogspot.sg/2012/10/implement-atof.html
// But it cannot convert floating point with high +/- exponent.
// The version below by Tian Bo fixes that problem and improves performance by 10%
// http://coliru.stacked-crooked.com/a/2e28f0d71f47ca5e
// Oliver Schonrock: I picked this code up from
// https://www.codeproject.com/Articles/1130262/Cplusplus-string-view-Conversion-to-Integral-Types

oschonrock

<?php

/**
 * intention of this class is not to do anything too fancy
 * it basically just runs one query, but it does so with ease and in a scalable and safe way
 * ie it won't block, you don't have to worry about setting up a new connection 
 * it will reuse the connection and the prepared statement if you make multiple calls
 * been tested and refined in high volume production for 1 year.
 *
 * to use it just customise the __contrsuct below with your DB details and call:

oschonrock

<?php

/**                                                                                                                                                           
 * leach() = "legacy each"                                                                                                                                    
 *                                                                                                                                                            
 * replacement for deprecated each() for php7.2                                                                                                               
 * use this if refactoring would be too painful and performance is not relevant                                                                               
 *                                                                                                                                                            
 */
function leach(&$arr)

oschonrock

#!/usr/bin/env php
<?php

/*
 * generates the code for sodium_compat.php
 */

define('BASE', dirname(dirname(__FILE__)) . '/');

$lib = '<?php