Language Comparisons

ID:1087481
 
Dec 16 2012, 3:12 pm (Edited on Dec 16 2012, 3:35 pm)
This is kind of a silly thing, but I like comparing languages and how to write basic functions within them. I've used DM for years and I'm just learning JavaScript; here's how I would write an add() and sum() function in both:

// DM
proc
    add(a, b)
        return a + b

    sum()
        . = 0

        for(var/i = 1 to args.len)
            . = add(., args[i])



// JavaScript
function add(a, b) {
    "use strict";

    return a + b;
}

function sum() {
    "use strict";

    var i,
        total = 0;

    for (i = 0; i < arguments.length; i += 1) {
        total = add(total, arguments[i]);
    }

    return total;
}


I'd love to see others write these two functions in other languages. :)
Dec 16 2012, 3:33 pm
Sorry but I keep getting NaN with the JavaScript snippet you supplied, might just be me?

document.write("Results : " + sum(400, 600))

or with
document.write("Results : " + sum(400))


http://jsfiddle.net/X8h8H/
Dec 16 2012, 3:35 pm
In response to A.T.H.K
Doh, when I rewrote it from memory I forgot to set total to 0. Thanks for pointing that out!
Dec 16 2012, 3:36 pm
That's ok, strange that it keeps on printing out the exact same value of sum(400) though hah.
Dec 16 2012, 4:52 pm (Edited on Dec 16 2012, 5:10 pm)
C++


#include "stdafx.h"
#include <iostream>

using namespace std;


int _tmain(int argc, _TCHAR* argv[])
{
    return 0;
}


int Add(int a, int b)
{
    return a + b;
}

void main()
{
    int x;
    int y;

    cout<<"Input your first interger to add:";
    cin>>x;
    cin.ignore();
    cout<<"Input your second interget to add:";
    cin>>y;
    cin.ignore();
    cout<<"The sum of your numbers is:"<< Add(x,y) <<"\n";
    cin.ignore();
}


Dec 16 2012, 4:58 pm
PHP

function add($a,$b){
    $result = $a + $b;
    return 'Calculated sum is - '.$result;
}
echo add(2,4);


I didn't see the need to have a separate functions to calculate the two inputs..
Dec 16 2012, 4:58 pm
Dart (Google)
add(a, b) => a + b
Dec 16 2012, 4:59 pm
In response to A.T.H.K
A.T.H.K wrote:
PHP

> function add($a, $b){return 'Calculated sum is - '.$a + $b;}
> echo add(2,4);
>

I didn't see the need to have a separate functions to calculate the two inputs..


The other function (sum) allowed you to enter any number of sums, as it looped through the function's argument list.
Dec 18 2012, 8:12 am
 
//Python

def Add(a,b):
    return a + b

if __name__=="__main__":
    x = input("A: ")
    y = input("B: ")
    Add(x,y)