faruktoptas

object MrzValidator {

    private val COEFFICIENTS = listOf(7, 3, 1)
    private const val EMPTY = '<'

    /**
     * Samples:
     * - Document number: isValid("D123456785", 0, 9) actual document number is "D12345678" check character is "5"
     * - Date: isValid("7903063", 0, 6)) actual date is "790306" check character is "3"
     */

tclementdev

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

• You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

• Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

recp

/*
 * Copyright (c), Recep Aslantas.
 * MIT License (MIT), http://opensource.org/licenses/MIT
 */
 
#version 410

#define AmbientlLight    1u
#define DirectionalLight 2u
#define PointLight       3u

bkaradzic

Orthodox C++

What is Orthodox C++?

Orthodox C++ (sometimes referred as C+) is minimal subset of C++ that improves C, but avoids all unnecessary things from so called Modern C++. It's exactly opposite of what Modern C++ suppose to be.

Why not Modern C++?

galek

in vec2 v_texcoord; // texture coords
in vec3 v_normal;   // normal
in vec3 v_binormal; // binormal (for TBN basis calc)
in vec3 v_pos;      // pixel view space position

out vec4 color;

layout(std140) uniform Transforms
{
    mat4x4 world_matrix;  // object's world position

Youka

#include <windows.h>	/* WinAPI */

/* Windows sleep in 100ns units */
BOOLEAN nanosleep(LONGLONG ns){
	/* Declarations */
	HANDLE timer;	/* Timer handle */
	LARGE_INTEGER li;	/* Time defintion */
	/* Create timer */
	if(!(timer = CreateWaitableTimer(NULL, TRUE, NULL)))
		return FALSE;

mattn

/* vi:set ts=8 sts=4 sw=4: */
/*
 * strtod implementation.
 * author: Yasuhiro Matsumoto
 * license: public domain
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>