gruber

The regex patterns in this gist are intended to match any URLs,
including "mailto:foo@example.com", "x-whatever://foo", etc. For a
pattern that attempts only to match web URLs (http, https), see:
https://gist.github.com/gruber/8891611


# Single-line version of pattern:

(?i)\b((?:[a-z][\w-]+:(?:/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))

aruslan

#include <stdio.h>

void shodan_ndup(char* s) {
  char* p = s;
  for(; *s; ++s)
    if (*s != s[1])
      *p++ = *s;
  *p = 0;
}

preshing

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

typedef unsigned int u32;
typedef unsigned long long u64;

//-------------------------------------------------------------------------
// WorkArea
//-------------------------------------------------------------------------

dobrokot

#include <iostream>
#include <fstream>

int main() {
    std::ifstream empty("empty.txt");
    std::ifstream no_file("no_file.txt");
    
    std::cout << "bool:   " << (empty?"e 1":"e 0") << ' ' << (no_file?"n 1":"n 0") << '\n';
    std::cout << "rdstate:" << (empty.rdstate()?"e 1":"e 0") << ' ' << (no_file.rdstate()?"n 1":"n 0") << '\n';

VladimirReshetnikov

using System;
using N; // This using directive is unused, but cannot be simply removed

static class C
{
    static void Ex(this string x) { }
    static void Foo(Action<string> x, int y) { }
    static void Foo(Action<string> x, string y) { }
    static void Foo(Action<string> x, object y) { }
    static void Foo(Action<int> x, int y) { }

gruber

The regex patterns in this gist are intended only to match web URLs -- http,
https, and naked domains like "example.com". For a pattern that attempts to
match all URLs, regardless of protocol, see: https://gist.github.com/gruber/249502


# Single-line version:

(?i)\b((?:https?:(?:/{1,3}|[a-z0-9%])|[a-z0-9.\-]+[.](?:com|net|org|edu|gov|mil|aero|asia|biz|cat|coop|info|int|jobs|mobi|museum|name|post|pro|tel|travel|xxx|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|s

aruslan

#include <cctype>  // isspace
#include <cstdlib>  // strtod, strtol
#include <functional>  // function
#include <iomanip>  // setw
#include <iostream>  // cerr

template<typename T>
T strtot(const char* start, char** end) { return std::strtol(start, end, 0); }
template<>
double strtot(const char* start, char** end) { return std::strtod(start, end); }

aruslan

#include <iostream>
#include <iterator>
#include <tuple>

template <typename C1, typename C2>
struct zip_container {
    C1& c1; C2& c2;
    typedef std::tuple<
        decltype(std::begin(c1)), decltype(std::begin(c2))
    > tuple;

Nekotekina

Bound Class Templates

Introduction

Bound class - a class that has direct access to non-static members of some outer class and knows its own location within this outer class. Whether it can access private or protected members of the outer class, is governed by existing friendship rules. The only proposed way a bound class can be defined and instantiated is through a bound class template. Non-template bound classes are not proposed.

Outer class - a class that has a member or a base class which is a bound class. An outer class itself can be a bound class, or a normal class. This term does not imply anything special.

Bound class template - a class template whose template parameter list has a special parameter, with special syntax. The presence of this template parameter turns a normal class template into a bound class template.