mrkline

// See http://sean-parent.stlab.cc/presentations/2016-10-10-runtime-polymorphism/2016-10-10-runtime-polymorphism.pdf
// or an earlier version, "Inheritance Is The Base Class of Evil"

#include <iostream>
#include <memory>
#include <string>
#include <vector>

using namespace std;

alexpana

Various 'features' of C++ that show the hacky / inconsistent way in which the language was constructed. This is a work in progress, and currently contains some of the reasons I can remember why I've given up on C++. If you want to contribute, leave your favourite "hack" in the comments.

1. (in)Visibility: C++ allows changing the access modifier of a virtual function in the derived class. Not only does C++ have no notion of interfaces, it actually allows subclasses to hide methods declared public in the superclass.

2. Operator over-overloading: One of the increment operators takes a dummy int parameter in order to allow overloading. Can you tell which without googling? (hint: its postfix).

3. Exception unspecifiers: C++ has two types of exception specifiers: throw() and nothrow. The first is deprecated (because 'we screwed up, sorry, let's forget about this terrible mess'). The second one guarantees it's contract by terminating the application when violated. That's because functions declared

daniel-j-h

update-alternatives --install "/usr/bin/ld" "ld" "/usr/bin/ld.gold" 20
update-alternatives --install "/usr/bin/ld" "ld" "/usr/bin/ld.bfd" 10

update-alternatives --config ld

ld --version
GNU gold

export CPP=cpp-5 gcc-5 g++-5
env CXXFLAGS='-march=native -flto -fuse-linker-plugin' cmake .. -DCMAKE_BUILD_TYPE=Release

chiral

#include "ceres/ceres.h"
#include "glog/logging.h"

using ceres::CostFunction;
using ceres::AutoDiffCostFunction;
using ceres::Problem;
using ceres::Solver;
using ceres::Solve;

struct CostFunctor {

karpathy

"""
Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
BSD License
"""
import numpy as np

# data I/O
data = open('input.txt', 'r').read() # should be simple plain text file
chars = list(set(data))
data_size, vocab_size = len(data), len(chars)

thirdwing

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

vector<vector<int> > cart_product (const vector<vector<int>>& v) {
    vector<vector<int>> s = {{}};
    for (auto& u : v) {
        vector<vector<int>> r;

sloria

The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.

In General

Values

• "Build tools for others that you want to be built for you." - Kenneth Reitz
• "Simplicity is alway better than functionality." - Pieter Hintjens

aras-p

// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

ttezel

%{
    Problem 7 (i): modexp function
    Returns x ^ y mod n for x, y, and n > 1.
%}
function result = modexp (x, y, n)
    %anything raised to 0th power = 1 so return 1
    if (y == 0)
        result = 1;
        return;
    end

unsuthee

///////////////////////////////////////////////////////////////////////////////
 
#ifndef _SKIPLIST_H_
#define _SKIPLIST_H_
 
#include <iostream>
#include <sstream>
 
///////////////////////////////////////////////////////////////////////////////