The Big Programming Thread - Page 295

On May 07 2013 11:58 cydial wrote:
I'm doing basic computer science atm and I'm wondering how people actually get a program to be executed through double clicking it.

Atm all I do is type it into a command prompt, first to compile, a second time to run.

On May 07 2013 12:19 Roe wrote:

what language is the program written in?

On May 07 2013 12:25 waxypants wrote:


What is your environment (mainly talking just about OS here).

On May 07 2013 12:19 Roe wrote:

what language is the program written in?

On May 07 2013 13:04 cydial wrote:


I'd like to do it in python (linux) or c++ / c (windows).

On May 07 2013 09:20 Craton wrote:
How does one go about writing a select statement (PL/SQL) that will accomplish the following:

Assume a "lookup" table with a pair of fields "match" and "replace" that have values like: À, A; È, E (such that you have pairs of "accented" characters in the match and "normal" characters in the replace).

Assume you have another table with n number of records, any of which have one or more characters matching this pattern. The end translation should go something like ÀNYWHÈRÈ -> ANYWHERE.

For a single value, I can use a CONNECT BY LEVEL to split each character into a separate field, join to the lookup table, and then use a MODEL construct to perform the replacement and concatenation of each character (ordering maintained), taking only the final "built" value. However, I can't make it work when I have multiple values (i.e. from a table), since I can't just connect it by level.

I feel there might also be a way to skip the CONNECT BY step altogether, but I can't make it happen.

Thoughts?

On May 07 2013 21:31 Arnstein wrote:
Isn't there an easier way to declare a variable that can't get less than zero?

int i = ...;

i = std::max(i, 0);

On May 07 2013 21:31 Arnstein wrote:
Isn't there an easier way to declare a variable that can't get less than zero?

private int _notbelowzero;

public int NotBelowZero
{
    get { return _notbelowzero; }
    set { 
        if (value < 0)
            _notbelowzero = 0;
        else
            _notbelowzero = value; 
     }
}

On May 07 2013 21:48 Tobberoth wrote:

In object oriented languages, you would probably implement it as a property.

Something like: (C#)

private int _notbelowzero;

public int NotBelowZero
{
    get { return _notbelowzero; }
    set { 
        if (value < 0)
            _notbelowzero = 0;
        else
            _notbelowzero = value; 
     }
}

x : int { x > 0 }

On May 07 2013 13:30 JeanLuc wrote:


In windows you just double click the exe file and it should run. Create a shortcut for the .exe file or whatever and give it a different picture other than the default. You might need to put in some code that will wait for the user to press a keystroke before exiting (in your console io application)
(when you are compiling C program in windows an .exe file will get created. just look for that)

On May 08 2013 01:24 cydial wrote:


How would I do it in python?

On May 08 2013 01:31 Rannasha wrote:


Create a new shortcut (typically with the menu opened by rightclicking on the desktop) and in the shortcut options, enter "python /path/to/file/nameofyourfile.py".

Basically call the 'python' program with the path to your python-file as argument and make a shortcut out of it.

On May 07 2013 21:18 DertoQq wrote:
no, -10 is probably represented by something like that in binary (on 8 bits) : 10001010. The bit on the left represent the negative value. But if you tell the computer it is an unsigned int, the bit on the left will be interpreted as a 'real' number, so : 138

If you want to do that, you can create your own class

On May 08 2013 05:24 tec27 wrote:

You have the right idea, but that's not actually how negative numbers are represented, generally.

See: http://en.wikipedia.org/wiki/Two's_complement

What the actual value will be therefore depends on the size of the int. For 8 bits, the representation of -10 would be: 11110110 (or 246 unsigned).