The Big Programming Thread - Page 224

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Thread Rules
1. This is not a "do my homework for me" thread. If you have specific questions, ask, but don't post an assignment or homework problem and expect an exact solution.
2. No recruiting for your cockamamie projects (you won't replace facebook with 3 dudes you found on the internet and $20)
3. If you can't articulate why a language is bad, don't start slinging shit about it. Just remember that nothing is worse than making CSS IE6 compatible.
4. Use [code] tags to format code blocks.

Recognizable

Netherlands1552 Posts

December 29 2012 19:14 GMT

#4461

On December 30 2012 04:05 windzor wrote:

Show nested quote +

In what context? My guess is, that in yours it's a no.

Ok. I probably haven't learned what it is yet. I'll cross paths with libraries someday and keep it in mind when tackling problem 3.

heishe

Germany2284 Posts

December 29 2012 19:20 GMT

#4462

On December 30 2012 04:14 Recognizable wrote:

Show nested quote +

Ok. I probably haven't learned what it is yet. I'll cross paths with libraries someday and keep it in mind when tackling problem 3.

Are you speaking of the C# library class? Then it's a clear no. The library class that provides key->value mappings for fast lookups while list is... well, a list.

Recognizable

Netherlands1552 Posts

December 29 2012 21:26 GMT

#4463

Wait, are we talking about dictionaries(in Python)? Anyway I'll solve the problem some way, some day.

heishe

Germany2284 Posts

December 29 2012 21:42 GMT

#4464

On December 30 2012 06:26 Recognizable wrote:
Wait, are we talking about dictionaries(in Python)? Anyway I'll solve the problem some way, some day.

Actually, I was confused. The C# dictionary is "dictionary" in C# as well. Don't know what you mean by library then.

tec27

United States3702 Posts

December 29 2012 23:39 GMT

#4465

He's talking about library in what AmericanUmlaut said, IE: a library to store the number you're factoring. He means a module, or a set of classes, or something along those lines (which you might need to store the number you're factoring because it is likely to be larger than a normal integer, and not all languages have built in large number classes).

Recognizable

Netherlands1552 Posts

December 30 2012 12:40 GMT

#4466

On December 30 2012 08:39 tec27 wrote:
He's talking about library in what AmericanUmlaut said, IE: a library to store the number you're factoring. He means a module, or a set of classes, or something along those lines (which you might need to store the number you're factoring because it is likely to be larger than a normal integer, and not all languages have built in large number classes).

http://www.tutorialspoint.com/python/python_classes_objects.htm
It's probably in the advanced section here somewhere? I've just started with Classes/Objects.

b3n3tt3

595 Posts

December 30 2012 13:20 GMT

#4467

A hint to the euler #3:+ Show Spoiler +

checking divisibility can be done by mod(%),
mathematically all prime factors of n are <sqrt(n), so checking for primality upto the sqrt should shave a lot of time

AmericanUmlaut

Germany2594 Posts

December 30 2012 14:22 GMT

#4468

When I said "library" I was referring to an external component that offers a collection of classes and/or functions. The reason is that most languages (that I am familiar with) don't offer native support for integers larger than 32 bits, so if you want to store anything larger than that you'll need to use a library that includes a class for very large integers. I think I've read that Python supports larger ints natively, and C has a "long long int" or something like that that supports larger integers, but most languages don't.

Deleted User 101379

4849 Posts

December 30 2012 15:26 GMT

#4469

On December 30 2012 23:22 AmericanUmlaut wrote:
When I said "library" I was referring to an external component that offers a collection of classes and/or functions. The reason is that most languages (that I am familiar with) don't offer native support for integers larger than 32 bits, so if you want to store anything larger than that you'll need to use a library that includes a class for very large integers. I think I've read that Python supports larger ints natively, and C has a "long long int" or something like that that supports larger integers, but most languages don't.

For some of the euler examples, a 64bit integer won't be enough.

I did most of that either in Perl - which has native support for integers of basically unlimited size - or in C with Gnu MP. Don't know about python.

Shenghi

167 Posts

December 30 2012 19:12 GMT

#4470

As far as I'm aware Python has no defined maxmimum number. It's only limited by available address space.

Frigo

Hungary1023 Posts

December 31 2012 16:58 GMT

#4471

Just transitioned from Subversion to Mercurial since my build- and file server is dead and can't access svn repos. Tried the same with Git at the previous server death but it only made my hair stand on end. However the transition to Mercurial was surprisingly easy, TortoiseHg is easy to use. Have yet to push/pull/synchronize it with other repositories though.

Also transitioned from Ant to Gradle, due to the former's inability to generate Eclipse .classpath files based on Ivy dependencies. Again, this was suprisingly easy, was done in 20 minutes most, with my smallish prior experience in Gradle. My build.gradle is like 12 lines long. Have yet to configure Jenkins to use it, but since my server is dead, this is a non-issue at the moment.

However Gradle runs unit tests very slowly for some reason, I'm looking into it at the moment. Apart from this, both utils are recommended.

ptrpb

Canada753 Posts

January 01 2013 22:14 GMT

#4472

nevermind, found the problem

TriZen

England219 Posts

January 03 2013 23:02 GMT

#4473

Heyy, I haven't posted in here before.. probably because I don't really do much programming.

However! It is a part of my computing degree and I am currently stuck on using a jTable with a connected element being a database table. I have absolutely no clue how to sort the table, or have it sorted on load.

If you think you could help, I've put more details of the problem in the spoiler below!

+ Show Spoiler +

The IDE I am using is Netbeans. Had to create a league management system for a given scenario, I have everything done but the jTable sort.

[image loading]

If you have any idea on how I would go about having this load using SQL ORDER BY Points desc (or any other way); i'd greatly appreciate the help.

I really thought it'd be regarding the following statement:

teamQuery = java.beans.Beans.isDesignTime() ? null : AlumniDBPUEntityManager.createQuery("SELECT t FROM Team t");

However changing the SQL at all just presents numerous bugs.

Hopefully when my programming improves i can contribute to this thread more, however at the moment I only really know SQL, html and vb. Thanks in advance :D

Edit: Solved this now - was a simple mistake using sql (solution was SELECT t FROM Team t ORDER BY (t.points) DESC, (t.difference) DESC, (t.name) ASC).

Hug-A-Hydralisk

United States174 Posts

January 03 2013 23:26 GMT

#4474

My brother's trip to Las Vegas along with a programmer from Silicon Valley.

DeepBlu2

United States975 Posts

January 03 2013 23:48 GMT

#4475

Anyone mind suggesting a good starting language that is important, and a good resource for learning it?

Craton

United States17281 Posts

January 04 2013 00:05 GMT

#4476

C#.NET and C++ are both in pretty high demand are are pretty prevalent in the industry. I don't know how Java stacks up to those, but I imagine it's in strong demand. C# would be the easier one to start with of the first two. I don't really have good learning resources, though.

phar

United States1080 Posts

January 04 2013 03:00 GMT

#4477

There are links in the first post of this topic for learning stuffs. If you've done a total of 0 programming before, I would recommend starting with a less syntax heavy language, like Python. Also, learnpythonthehardway.org

icystorage

Jollibee19350 Posts

January 04 2013 11:22 GMT

#4478

http://programmerryangosling.tumblr.com/

have you guys seen this? lol pretty funny stuff.

CSS questions:
+ Show Spoiler +

1) how do I extend the width of the main menu bar to fit whole page dynamically?
2) same with the submenu

HTML
+ Show Spoiler +

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link rel="stylesheet" href="primary.css" type="text/css" />
<title>Untitled Document</title>
</head>
<body>    
    <div id="container">
        <ul id="menu">
            <li><a href="#">News</a>
				<ul>
                    <li><a href="#">legacy</a></li>
                </ul></li>
            <li><a href="#">Expertise</a></li>
			<li><a href="#">journey</a>
				<ul>
                    <li><a href="#">legacy</a></li>
                    <li><a href="#">journey</a></li>
                </ul>   </li>
			<li><a href="#">Solutions</a>
				<ul>
                    <li><a href="#">legacy</a></li>
                    <li><a href="#">journey</a></li>
                    <li><a href="#">rally</a></li>
                </ul></li>
            <li><a href="#">Publications</a>
                <ul>
                    <li><a href="#">legacy</a></li>
                    <li><a href="#">journey</a></li>
                    <li><a href="#">rally</a></li>
					<li><a href="#">legacy</a></li>
                    <li><a href="#">journey</a></li>
                    <li><a href="#">rally</a></li>
                </ul>
            </li>
			<li><a href="#">Regimbeau</a></li>
			<li><a href="#" class="hidden">Career</a></li>
            <li><a href="#">Contact</a></li>
        </ul>
    <!--container--></div>  
</body>
</html>

CSS
+ Show Spoiler +

html, body {
    margin: 0;
    font: 100% "Trebuchet MS", Arial, Helvetica, sans-serif;
    color: #000  ;
    background: #000  ;
}
        /* HTML5 tags */
        header, section, footer,
        aside, nav, article, figure {display: block;}
		/*
#container {
    width: 1000px;
    margin: 30px auto 900px;
    padding: 0 0 500px;
    background: #999  ;
    overflow: auto;
	text-transform: uppercase;
}
*/

ul#menu {
width:1000px;
text-transform: uppercase;} /* menu properties */

    ul#menu ul {width: 500px;} /* controls the number of submenus per row */
        ul#menu, ul#menu ul{
            list-style-type: none;
            font-size: 1em;
            background: #f00  ;
			} /* submenu properties */
ul#menu li {
    height: 30px;
    line-height: 30px;
    width: 125px;
    float: left;
    color: #fff  ;
}
        ul#menu li ul{display: none;} /* hides the submenus*/
        ul#menu li:hover ul{display : inline-block;} /* shows submenus on hover*/
ul#menu ul li a {
    width: 125px;
    float: left;
    color: #fff;
} /*submenus items properties*/
    ul#menu a{
        display: block;
        text-decoration: none;
        color: #fff  ;
    } /*menu items properties*/
    ul#menu a:hover,
    ul#menu a:active {background: #00f  ;}
	
ul#menu .hidden{
	display:none;
} /*Hides the menu */

Blisse

Canada3710 Posts

January 05 2013 02:38 GMT

#4479

I would use media queries because I don't like JS, and I don't like percentage solutions like the one below.

If you're talking simple HTML/CSS, then put the entire main menu in its own container, set that container's CSS to width to "100%", and set the width of each option in your main as a percentage, all of which add up to 100.

Hopefully I'm not misinterpreting.

Saracen

United States5139 Posts

January 05 2013 04:26 GMT

#4480

Just started on ProjectEuler... Is it cheating to use Python? It feels like it's cheating, since Python has pretty much infinite integer precision afaik...

For example, for number 16...
+ Show Spoiler +

reduce(lambda x, y: int(x) + int(y), list(str(2 ** 1000)))

...seems just unfair when it seems like they're looking for a clever/elegant way to deal with large numbers.

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