nepda

-- Übung zur Vorlesung Höhere Programmiersprachen
-- im Wintersemester 12/13 an der TU Chemnitz
--
-- http://wiki.nepda.eu/wiki/Höhere_Programmiersprachen_(Übung)
-- 
-- -----------------------------
-- Ü1, A1 a
nand:: Bool->Bool->Bool
nand a b = not (a && b)

nepda

//  Initialisierung ...
if (request == 'catalog_products') {
    var products = db.query('SELECT * FROM `catalog_products`');
    // warten auf Antwort der Datenbank...
    // ...
    // ...
    foreach (i in products) {
        response.write(product[i].title + ', ' + product[i].price + ' &euro;<br>');
    }
}

nepda

typedef struct {
    signal s;
} bsem; // binary semaphor
 
void bsem_down(bsem s) {
    wait(bsem.s);
}
 
void bsem_up(bsem s) {
    signal(bsem.s);

nepda

typedef struct {
    unsigned int cnt;
    bsem wait;
    bsem mutex;
} sem;

void sem_down(sem s) {
    bsem_down(s.wait);
    bsem_down(s.mutex);
    if (s.cnt > 1) {

nepda

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class SamplePage : System.Web.UI.Page
{
    protected void Button1_Click(object sender, EventArgs e)
    {
        Label1.Text = "Clicked at " + DateTime.Now.ToString();
    }

nepda

<?php
namespace Console\Controller;

use Zend\Mvc\Controller\AbstractActionController;
use Zend\Console\Request as ConsoleRequest;

class IndexController extends AbstractActionController
{
    protected $prompt = '$ > ';

nepda

JSON HAL With Server Status (JHWS2) Specification

Authors

• nepda info@nepda.eu

This specification aims to extends the HAL specification by a standard way for providing messages and statuses according to the request. Additionally you have the possibility to transfer more than one result due the "ResponseSet".

Problems with the current HAL specification

nepda

#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
int main(int argc, char** argv) {
	int fd,
		count,
		nbytes = 4;
	char buffer[4];

nepda

#include <fcntl.h>
#include <unistd.h>
int main(int argc, char** argv) {
	int f1,
		f2,
		res;
	char buffer[42];
	f1 = open("foo1", O_RDONLY, 0);
	f2 = open("foo2", O_RDWR | O_CREAT | O_TRUNC, 0644);
	res = read(f1, buffer, 42); // read "Hallo Welt\n", 10 bytes from f1 into buffer

nepda

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <wait.h>
int main(int argc, char** argv) {
	pid_t cpid;
	int fd[2],