Нашли или выдавили из себя код, который нельзя назвать нормальным, на который без улыбки не взглянешь? Не торопитесь его удалять или рефакторить, — запостите его на говнокод.ру, посмеёмся вместе!
Всего: 17
−22
template< class T >
T* addressof(T& arg)
{
return reinterpret_cast<T*>(
&const_cast<char&>(
reinterpret_cast<const volatile char&>(arg)));
}
...
template<class T>
struct Ptr {
...
T** operator&() { return &data; }
};
int main() {
Ptr<int> p(new int(42));
f(&p); // calls int** overload
f(std::addressof(p)); // calls Ptr<int>* overload, (= this)
}
Obtains the actual address of the object or function arg, even in presence of overloaded operator&
http://en.cppreference.com/w/cpp/memory/addressof
WTF?
myaut,
04 Октября 2016
+10
http://i.imgur.com/g5MswBc.pngEmotive programming in XCode
myaut,
22 Июня 2016
+5
#include <iostream>
namespace __hidden__ {
struct print {
bool space;
print() : space(false) {}
~print() { std::cout << std::endl; }
template <typename T>
print &operator , (const T &t) {
if (space) std::cout << ' ';
else space = true;
std::cout << t;
return *this;
}
};
}
#define print __hidden__::print(),
int main() {
int a = 1, b = 2;
print "this is a test";
print "the sum of", a, "and", b, "is", a + b;
return 0;
}Отсюда: [color=violet]http://madebyevan.com/obscure-cpp-features/[/color]
myaut,
13 Мая 2016
+57
#include <iostream>
#include <stdexcept>
template<std::size_t N>
static int constexpr date_component(const char (&s)[N], int i, bool last, int max) {
return
(i + 2 + (last ? 0 : 1) >= N)
? throw std::logic_error("Too short date string") :
(!last && s[i + 2] != ':')
? throw std::logic_error("Cannot find delimiter") :
(s[i] < '0' || s[i] > '9' || s[i + 1] < '0' || s[i + 1] > '9')
? throw std::logic_error("Not a number") :
((s[i] - '0') * 10 + (s[i + 1] - '0') > max)
? throw std::logic_error("Too large number") :
(s[i] - '0') * 10 + (s[i + 1] - '0');
}
struct time {
int hour; int minute; int second;
template<std::size_t N>
constexpr time(const char (&datestr)[N]) :
hour(date_component(datestr, 0, false, 24)),
minute(date_component(datestr, 3, false, 60)),
second(date_component(datestr, 6, true, 60))
{}
};
struct time constexpr midnight("00:00:00");
struct time constexpr afternoon("12:00:00");
int main(int argc, char* argv[]) {
std::cout << "Midnight hour is " << midnight.hour << std::endl;
std::cout << "Afternoon hour is " << afternoon.hour << std::endl;
}C++ и даты времени компиляции
myaut,
03 Апреля 2015
+136
printf("Enter item code: "); //Prompts user
scanf ("%14s", codenew1); //Read user input
len = strlen(codenew1); //Read each character into variable len
while (len != strspn(codenew1, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"))
{
printf ("Name contains non-alphabet characters. Try again!: "); //Prompts user to try again
scanf ("%14s", codenew1); //Reads user input
len = strlen(codenew1); //Read each character into variable len
} //Endwhile
strncpy(codenew, codenew1,2); //Copy the first two characters from the variable codenew1
codenew[2] = 0; //Store first two characters into variavle codenew
for ( j = 0; j < num_items; j++) //Loop for num_items times
{ //Beginning of for loop
if (strcmp(array[j].code1, codenew) == 0) //If codenew is found in file
{ //Beginning of if statement
price[i] = item_qty[i] * array[j].price1; //Calculating the price of an item
printf("Price : %d", price[i]); //Prints price
printf("\nEnter '%s' to confirm: ", array[j].itemname1); //Confirming the item
scanf("%19s", item_name1[i]);
while (strcmp(item_name1[i], array[j].itemname1 )!=0) //Looping until both item names are the same
{ //Begin while loop
printf("Item name is not %s ,Try Again!: ", array[j].itemname1); //Prompt user to try again
scanf ("%19s", item_name1[i]); //Reads item name into an array
len = strlen(item_name1[i]); //Reads each character into variable len
} //End while loop
len = strlen(item_name1[i]); //Read each character into variable len
while (len != strspn(item_name1[i], "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")) //While len contains non alphabetic characters
{ //Beginning while
printf ("Name contains non-alphabet characters. Try again!: "); //Prompts user to try again
scanf ("%19s", item_name1[i]); //Read user input
len = strlen(item_name1[i]); //Read each character into variable len
} //End while
strncpy(item_name[i], item_name1[i], 20); //Copy the first two characters from the variable codenew1
item_name[i][20] = 0; //Store first 20 characters in variable item_name[i]
total_price+= price[i]; //Calculate total price
break; //Terminates loop
} //End of if statement
else
if (strcmp(array[j].code1, codenew) != 0) //If codenew is found in file
{
printf("Invalid input! Try again.");
goto Here;
}
} //End of for loop
Бесценные комментарии!
http://stackoverflow.com/questions/29045067/error-check-files
myaut,
14 Марта 2015
+160
<?php
namespace MultipleHashMapQueueMessageRetrieverCriterias\Domain\MultipleHashMapQueueMessageRetrieverCriterias\Adapters\Exceptions;
use MultipleHashMapQueueMessageRetrieverCriterias\Domain\Exceptions\MultipleHashMapQueueMessageRetrieverCriteriaException;
final class CannotConvertMultipleHashMapQueueMessageRetrieverCriteriaToMultipleQueueMessageRetrieverCriteriaException extends MultipleHashMapQueueMessageRetrieverCriteriaException {
const CODE = 1;
public function __construct($message, MultipleHashMapQueueMessageRetrieverCriteriaException $parentException = null) {
parent::__construct($message, self::CODE, $parentException);
}
}
http://www.reddit.com/r/lolphp/comments/2vrgr6/irestfulmultiplehashmapqueuemessageretri evercriter/
https://github.com/irestful/MultipleHashMapQueueMessageRetrieverCrit erias/blob/master/MultipleHashMapQueueMessageRetrieverCrit erias/Domain/MultipleHashMapQueueMessageRetrieverCrit erias/Adapters/Exceptions/CannotConvertMultipleHashMapQueueMessage RetrieverCriteriaToMultipleQueueMessageR etrieverCriteriaException.php
Алсо, обратите внимание на структуру гитхабовских репозиториев
myaut,
15 Февраля 2015
+78
/*org.eclipse.swt.internal.gtk.OS*/
public static final boolean IsAIX, IsSunOS, IsLinux, IsHPUX;
static {
/* Initialize the OS flags and locale constants */
String osName = System.getProperty ("os.name");
boolean isAIX = false, isSunOS = false, isLinux = false, isHPUX = false;
if (osName.equals ("Linux")) isLinux = true;
if (osName.equals ("AIX")) isAIX = true;
if (osName.equals ("Solaris")) isSunOS = true;
if (osName.equals ("SunOS")) isSunOS = true;
if (osName.equals ("HP-UX")) isHPUX = true;
IsAIX = isAIX; IsSunOS = isSunOS; IsLinux = isLinux; IsHPUX = isHPUX;
}PHP и даты Жава и Оси
myaut,
31 Августа 2014
−119
echo `getent passwd | awk -F: '{ if($1 == "myaut") print $3; }'`Определяет id пользователя myaut. Откопано в старой (моей) переписке. Эх...
myaut,
27 Декабря 2013
+141
if (connfailed) {
KSOCKET_CALLBACK(so, disconnected, error);
} else {
KSOCKET_CALLBACK(so, connectfailed, error);
}https://github.com/joyent/illumos-joyent/blob/master/usr/src/uts/common/fs/sockfs/socknotify.c
myaut,
17 Декабря 2013
+135
/*
* Now do an in-place copy.
* Map (R) to (r) and (TM) to (tm).
* The era of teletypes is long gone, and there's
* -really- no need to shout.
*/
while (*src != '\0') {
if (src[0] == '(') {
if (strncmp(src + 1, "R)", 2) == 0) {
(void) strncpy(dst, "(r)", 3);
src += 3;
dst += 3;
continue;
}
if (strncmp(src + 1, "TM)", 3) == 0) {
(void) strncpy(dst, "(tm)", 4);
src += 4;
dst += 4;
continue;
}
}
*dst++ = *src++;
}
*dst = '\0';
Не говнокод, но забавно.
Инициализация процессоров (и сбор cpuid) в Solaris
http://src.illumos.org/source/xref/illumos-gate/usr/src/uts/i86pc/os/cpuid.c#2488
myaut,
03 Мая 2013
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