noureddin

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# vim: set et sw=4 ts=4  :

# Pythonized from: https://doc.qt.io/qt-5/qtwebengine-webenginewidgets-html2pdf-example.html
# Differences from the C++ example:
# - handling local HTML files relative to the current working directory is added.
# - incognito mode is used.
# - removed tr() calls from the class.
# - a few cosemetic changes.

noureddin

#!/bin/bash

GITHUB_USERNAME=noureddin # change this to your github username
# or see https://gist.github.com/s-leroux/7cb7424d33ba3753e907cc2553bcd1ba

if [ "$1" == "" ]; then
  printf "Usage: %s [--public] filename [gistname]\n" $(basename "$0") >&2
  exit 1 # exit with error
fi

noureddin

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# do a lossy compression to an image using Single-value Decomposition (SVD)
# using numpy and opencv (and python)

import numpy as np
import cv2
from sys import argv

noureddin

// prints the integers from 0 to 10
// compile with zero optimizations (use no `-O` flags, or only `-O0`)
// works on ubuntu xenial with gcc 5.4.0 (changed the buffer line from the original to work)
// src: https://old.reddit.com/r/ProgrammerHumor/comments/7p9c25/printing_all_integers_from_0_to_10/

#include <stdio.h>

int a[3][3][3][3][3] = {0};

void magic() {

noureddin

#!/usr/bin/env perl
use strict; use warnings;
# download presentations from slideshare.net

sub help {
    use File::Basename 'basename';
    printf 'slideshare-dl - download presentations from slideshare.net

USAGE: %s -dl url_of_slides... [-r small|normal|full] [-q|-v]

noureddin

#include <string>
#include <vector>

// If you are using strtok, or a variant like strtok_r or strtok_s, in your
// C++ code, you may be interested in this instead.
//
// This header contains a function called `split`, that takes a string, and
// an array of delimiting characters, and breaks the string on the delimiters,
// in a way similar to strtok, and returns a vector of strings representing
// the tokens.

noureddin

Automated Verilog MIPS Testing

This documents our humble attempt at automating the testing of a MIPS project in Verilog using Perl.

We had two test scripts, general_test.pl and predefined_test.pl.

general_test.pl is made so that you can easily initialize some registers and pass a set of instructions and check the values of any number of registers after the execution; it was used for evaluating and grading the project.

noureddin

#!/usr/bin/env perl
use strict; use warnings;
# a MIPS Assembler
# usage: ./mas.pl infile.asm > outfile.hex
# - it outputs to stdout; redirect it to a file if you need so.
# - exactly one file shall be supplied as arg.
#   every line in the input file shall be either an instruction, a comment,
#   an empty line (has spaces only), or a labeled instruction, which is a label
#   followed by an instrucion on the same line. Lable-only lines are NOT well
#   supported.

noureddin

#!/usr/share/env perl
# a simple, two-player tic-tac-toe game

use strict; use warnings;

my @cells;

my %valid_input = map { $_ => undef } (1..9);

my $who_has_turn = 1;  # 1 or 2, for player 1 or 2, respectively

noureddin

Performance of C (and C++) functions: separate implementation and interface, or implementation in header?

Summary: In C, implementing a function in a header file, rather than a separate .c file, provides about 200% performance gain. Maybe it's because the compiler is inlining them. But you may not gain that much in nontrivial projects.
In C++, you need also to apply link-time optimization, with the compiler switch -flto, to have that 200% performance gain.

Note 1: In many projects, especially large ones, the bottleneck is not those non-inlined functions, and separating the implementation from the interface makes compilation faster, thus easier to develop.

Note 2: Algorithmic optimization is most important (chose better algorithms). If you really need more performance, investigate other possibilities, like parallelizing your code, vectorize some parts of it, etc.

Overview