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cmake, gcc, cuda and -m32 wtf

- by Nils

Hi all I figured out that CUDA does not work in 64bit mode on my mac (or couldn't get it running so far). Therefore I decided to compile everything for 32bit. I use cmake 2.8 and added the following options add_definitions(-Wall -m32) set(CUDA_64_BIT_DEVICE_CODE OFF) set(CMAKE_MODULE_LINKER_FLAGS -m32) However when it tries to link it it does something like this: /usr/bin/c++ -mmacosx-version-min=10.6 -Wl,-search_paths_first -headerpad_max_install_names CMakeFiles/SimpleTestsCUDA.dir/BlockMatrix.cpp.o CMakeFiles/SimpleTestsCUDA.dir/Matrix.cpp.o ./SimpleTestsCUDA_generated_SimpleTests.cu.o ./SimpleTestsCUDA_generated_BlockMatrix.cu.o -o SimpleTestsCUDA /usr/local/cuda/lib/libcudart.dylib /usr/local/cuda/lib/libcuda.dylib Which fails with a lot of "file is not of required architecture" warnings from ld. Now if I add manually -m32 to the command above it works. However I have no idea how to teach cmake to add -m32 to every gcc (or ld) invocation. So far it does it for nvcc and gcc, but not for linking..

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C Differences on windows and Unix OS

- by zapping

Is there any difference in C that is written in Windows and Unix. I teach C as well as C++ but some of my students have come back saying some of the sample programs does not run for them in Unix. Unix is alien for me. Unfortunately no experience with it whatsoever. All i know is to spell it. If there are any differences then i should be advising our department to invest on systems for Unix as currently there are no Unix systems in our lab. I do not want my students to feel that they have been denied or kept aloof from something.

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How to introduce custom primitive key types to WCF Data Services (Astoria)

- by Artem Tikhomirov

Hello. We use custom type to represent Identifiers in our project. It has TypeConvertor attached and it always helped with serialization. I've tried to use WCF Data Services to expose some data from our system, but faced a problem. Astoria framework do not recognize class as an entity even though I've decorated it with [DataServiceKey("Id")] attribute. If I change type of property to Guid - it totally works :(. How could teach WCF Data Services to understand this simple class?

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Reinforcement learning And POMDP

- by Betamoo

I am trying to use Multi-Layer NN to implement probability function in Partially Observable Markov Process.. I thought inputs to the NN would be: current state, selected action, result state; The output is a probability in [0,1] (prob. that performing selected action on current state will lead to result state) In training, I fed the inputs stated before, into the NN, and I taught it the output=1.0 for each case that already occurred. The problem : For nearly all test case the output probability is near 0.95.. no output was under 0.9 ! Even for nearly impossible results, it gave that high prob. PS:I think this is because I taught it happened cases only, but not un-happened ones.. But I can not at each step in the episode teach it the output=0.0 for every un-happened action! Any suggestions how to over come this problem? Or may be another way to use NN or to implement prob function? Thanks

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Best Online Programming Degree? (Masters Level)

- by Jason

I am less then a year from graduating with my bachelors in web development, however I would like to continue on with a masters in programming. As far as I can tell, what I want is a masters in software engineering. Sadly my current college only offers more management oriented masters level degrees, and I want something that is programming, not business. Ultimately my goal is to teach online and work freelance on the side. Here's the problem - I am visually impaired, so I do not drive and I prefer to take my classes entirely online. I have heard enough to avoid university of phoenix... and I have heard some good about walden, regis, and penn state's online MSSE programs. I am wondering if anyone here knows of any other good ones, or ones I should avoid. I have heard mixed reviews of Colorado Tech.

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Customize jquery ui progress bar

- by P. Sohm

I'd like to add some values under the jquery progress like My current code is : <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js"> </script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.23/jquery-ui.min.js"></script> <style type="text/css"> .ui-progressbar { height:2em; text-align: left; overflow: hidden; } .ui-progressbar .ui-progressbar-value {margin: -1px; height:100%; } .ui-widget { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1.1em; } .ui-widget .ui-widget { font-size: 1em; } .ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1em; } .ui-widget-content { border: 1px solid #dddddd; background: #EDEFF1 50% top repeat-x; color: #333333; } .ui-widget-content a { color: #333333; } .ui-widget-header { border: 1px solid #e78f08; background: #AB3B3B 50% 50% repeat-x; color: #ffffff; font-weight: bold; } .ui-widget-header a { color: #ffffff; } .ui-corner-all, .ui-corner-top, .ui-corner-left, .ui-corner-tl { -moz-border-radius-topleft: 4px; -webkit-border-top-left-radius: 4px; -khtml-border-top-left-radius: 4px; border-top-left-radius: 4px; } .ui-corner-all, .ui-corner-top, .ui-corner-right, .ui-corner-tr { -moz-border-radius-topright: 4px; -webkit-border-top-right-radius: 4px; -khtml-border-top-right-radius: 4px; border-top-right-radius: 4px; } .ui-corner-all, .ui-corner-bottom, .ui-corner-left, .ui-corner-bl { -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; -khtml-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; } .ui-corner-all, .ui-corner-bottom, .ui-corner-right, .ui-corner-br { -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 4px; -khtml-border-bottom-right-radius: 4px; border-bottom-right-radius: 4px; } #progressbar { float: right; margin-right: 100px; width: 120px; margin-top: -30px } #progress { position: relative} </style></head> <body> <script type="text/javascript"> $().ready(function() { $("#progressbar").progressbar({ value: 29 }); }); </script> <div id="progressbar"></div> </body></html> I didn't find how to have this result ... Another possibility would be to add some text at the right of the progress bar (I tryied with a but it comes in the line after)

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How do I tell eclipse to auto-generate or retain stubs when it starts and does a clean build?

- by Erick Robertson

I'm working on a Java application that uses JavaSpace. We're developing this in Eclipse. There are a couple instances where we are inserting code into the JavaSpace to do some more advanced space notification logic. Doing this requires that we generate stubs for the classes used within the JavaSpace. We use an external script to generate these stubs. The problem is that whenever Eclipse restarts, it does a clean build of the whole application. When it does this, it deletes all the stubs and we have to regenerate them. I would like to find a way to either tell Eclipse not to remove the _stub.class and _skel.class files within the bin folder where the .class files are placed. Either that, or somehow teach Eclipse to generate the stub files whenever it does a rebuild (and I suppose whenever the source files from which the stubs are generated changes). How can I do one of these, so that we don't have to manually build the stubs every time we start up Eclipse?

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WAMP phpundercontrol installation guide / tutorial

- by Shiro

Our team just thinking to start using php unit test for our problem. I not able to find a complete tutorial or installation which is install phpundercontrol in WAMP environment, I have no any experience about php unit test, but we know we need it. Our goal is everyday we would like to build the project, so we know where is the bug happen. We also would like to learn more collaboration between the team. I would like to ask / someone to teach, how to start install phpundercontrol in WAMP environment, or some link might be help. I did some research, most of the page I found kind of outdated, the command they provided doesn't work for me. Thank you so much.

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How to drill down with jQuery?

- by Timothy Reed

I'm new to jQuery so sorry if this sounds stupid but I'm having truble drilling down to other elemnts. Paticularly I want to fade in the .menu li a:hover class with jquery. .menu { padding:0; margin:0; list-style:none; } .menu li { float:left; margin-left:1px; } .menu li a { display:block; height:44px; line-height:40px; padding:0 5px; float:right; color:#fff; text-decoration:none; font-family:"Palatino Linotype", "Book Antiqua", Palatino, serif; font-size:12px; font-weight:bold; } .menu li a b { text-transform:uppercase; } .menu li a:hover { color:#E4FFC5; background: url(../images/arrow.png) no-repeat center bottom; } .current { background: url(../images/arrow.png) no-repeat center bottom; font-size:16px; font-weight:bold; } .spacer p { display:block; height:44px; line-height:40px; padding:0 5px; float:right; color:#fff; text-decoration:none; font-family:"Palatino Linotype", "Book Antiqua", Palatino, serif; font-size:12px; font-weight:bold; } <ul class="menu"> <li class="current"><a href="index.html">Home</a></li> <li class="spacer"> <p>|</p> </li> <li><a href="#">Mission & Values </a></li> <li class="spacer"> <p>|</p> </li> <li><a href="#">Caregivers</a></li> <li class="spacer"> <p>|</p> </li> <li><a href="#">Special Programs </a></li> <li class="spacer"> <p>|</p> </li> <li><a href="#">Enployment</a></li> <li class="spacer"> <p>|</p> </li> <li><a href="#">Contact</a></li> </ul> <script type="text/javascript"> $(function() { $('a').mouseover(function() { $('.logo').animate ({opacity:'0.6'}, 'normal'); }); $('a').mouseout (function() { $('.logo').animate ({opacity:'1'}, 'normal'); $('.menu li a:hover').fadeIn ('slow'); }); </script>

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Mysql eliminate user based on conditions

- by Dustin

I asked this last week over the weekend and it got buried in the archives before anyone could answer. So forgive me if you've already seen this. I teach classes and want to be able to select those students who have taken one class, but not another class. I have two tables: lessons_slots which is the table for every class such as: -------------------- -ID name slots- -1 basics 10 - -2 advanced 10 - -3 basics 10 - --------------------- The other table is class_roll, which holds enrollment info, such as: -------------------- -sID classid firstname lastname- -1 1 Jo Schmo -2 1 Person Two ... -13 2 Jo Schmo --------------------- What I want to do, I select everyone who has not had the advanced class (for example). I've tried doing SELECT * FROM lessons_slots LEFT JOIN class_roll ON lessons_slots.ID = class_roll.classid WHERE lessons_slots.name != 'advanced' But that doesn't work...All it does is eliminate that row, without eliminating the user. I want Jo Schmo, for example, to not show up in the results. Any ideas?

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Why is x86 ugly? aka Why is x86 considered inferior when compared to others?

- by claws

Hello, recently I've been reading some SO archives and encountered statements against x86 architecture. http://stackoverflow.com/questions/2667256/why-do-we-need-different-cpu-architecture-for-server-mini-mainframe-mixed-cor says "PC architecture is a mess, any OS developer would tell you that." http://stackoverflow.com/questions/82432/is-learning-assembly-language-worth-the-effort says "Realize that the x86 architecture is horrible at best" http://forums.anandtech.com/showthread.php?t=976577 says "Most colleges teach assembly on something like MIPS because it's much simpler to understand, x86 assembly is really ugly" and many more comments like Compared to most architectures, X86 sucks pretty badly. It's definitely the conventional wisdom that X86 is inferior to MIPS, SPARC, and PowerPC x86 is ugly I tried searching but didn't find any reasons. I don't find x86 bad probably because this is the only architecture I'm familiar with. Can someone kindly give me reasons for considering x86 ugly/bad/inferior compared to others.

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What methods are used to visualize a 4-dimensional Array?

- by Atomiton

An Array ( a row of elements ): [ ][ ][ ][ ][ ][ ] A 2-D Array ( a table ): [ ][ ][ ][ ][ ][ ] [ ][ ][ ][ ][ ][ ] [ ][ ][ ][ ][ ][ ] [ ][ ][ ][ ][ ][ ] A 3-D Array: //Imagine the above table as a cube ( a table with depth ) How does one visualize a 4-D array? The closest I can come is multiple cubes, so for int[,,,] [5,10,2,7] would be cube 5, row 10, column 2, layer(depth) 7. I'm not sure if this is the best way to visualize a 4-D array, though... and I'm not sure it's the best way to teach it... however it does have the advantage of being extensible ( a row cubes, a table of cubes, a cube of cubes ( 6-d array ) Cubes through time is another way that I can think of it. Am I on the right track here?

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Arrow operator (->) usage in C

- by Mohit Deshpande

I am currently learning C by reading a good beginner's book called "Teach Yourself C in 21 Days" (I have already learned Java and C# so I am moving at a much faster pace). I was reading the chapter on pointers and the - (arrow) operator came up without explanation. I think that it is used to call members and functions (like the equivalent of the . (dot) operator, but for pointers instead of members). But I am not entirely sure. Could I please get an explanation and a code sample?

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innovation for technical high school

- by gnuze

I work in a high school in Italy. Our goal is forming computer programmers in 5 years. Nowaday, we teach vb.net on Win ( desktop applications using ADO on Access ), C on linux ( process, threads ) , C++ on Linux ( sockets TCP/UDP with UML ), and a bit of ASP.net, flash programming, PHP, Joomla and PIC Microcontrollers. We are looking for something innovative to add in our programs of study, but every teacher have a different point of view: we are debating about python, C#, Arduino, Silverlight and smartphones programming. Any suggestions? Tx in advance.

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JavaScript setInterval loop not holding variable

- by Ryan

Here is my code: var showNo = 1; window.setInterval(function() { console.log(showNo); if(showNo === 1) { var nextNo = 2; } else if(showNo === 2) { var nextNo = 3; } else if(showNo === 3) { var nextNo = 4; } else if(showNo === 4) { var nextNo = 5; } else if(showNo === 5) { var nextNo = 1; } else { var showNo = 1; var nextNo = 2; } var showNo = nextNo; }, 500); My question is, why is the showNo variable not holding when the setInterval loop starts? The console displays 'undefined' in the above example. This may be a simple question, but I am trying to teach myself query and this has me stuck.. Any answers would be great. Thanks.

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Shall i learn Assembly Language or C, to Understand how "real programming" works?

- by Daniel Upton

Hello, World.. I'm a web developer mostly working in Ruby and C#.. I wanna learn a low level language so i dont look like an ass infront of my (computer science expert) boss. Ive heard a lot of purist buzz about how assembly language is the only way to learn how computers actually work, but on the other hand C would probably be more useful as a language rather than just for theory. So my question is.. Would Learning C teach me enough computer science theory / low level programming to not look like a common dandy (complete tool)? Thanks! Daniel

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How to Loop & rename MySQL table in Perl

- by Nano HE

Hi, Could you plesae teach me how to Loop & rename MySQL table in Perl. Thanks. my code snippet attached use strict; use warnings; use DBI; my $dbh = DBI->connect( 'DBI:mysql:database=dbdev;host=localhost', 'dbdev', 'dbdevpw', { RaiseError => 1, AutoCommit => 1 }, ); my $sql = RENAME TABLE old_table TO new_table; my $sth = $dbh->prepare($sql); while (<DATA>){ chomp; // How to implement the Rename all the old tables with the while loop. $sth->execute(); }

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jQuery setInterval loop not holding variable

- by Ryan

Here is my code: var showNo = 1; window.setInterval(function() { if(showNo === 1) { var nextNo = 2; } else if(showNo === 2) { var nextNo = 3; } else if(showNo === 3) { var nextNo = 4; } else if(showNo === 4) { var nextNo = 5; } else if(showNo === 5) { var nextNo = 1; } else { var showNo = 1; var nextNo = 2; } var showNo = nextNo; }, 500); My question is, why is the showNo variable not holding when the setInterval loop starts? This may be a simple question, but I am trying to teach myself query and this has me stuck.. Any answers would be great. Thanks.

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In what language was MSDOS originally written in?

- by nebukadnezzar

In what language was MSDOS originally written in? The Wikipedia Article implies either C, QBasic or Pascal, but: * C was invented to write UNIX, so I don't believe it was used to write MSDOS * Pascal seems popular to teach programming, but not really popular to write Operating systems in * QBasic didn't seem to be very popular for Operating Systems at the time MSDOS was developed (or was *BASIC ever very popular to write Operating Systems in it?) Except these three languages there is also Assembly, but I assume that Microsoft already switched from Assembly to a "higher" level language? Since C was originally invented for UNIX, I still wouldn't think Microsoft is using C... although the Microsoft API is written in C (I find this kind-of oxymoronic, actually). Can anyone enlighten me on this topic?

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How get <body> element from the html which one have as a string

- by Oleg

Hello! I have a stupid problem. An jQuery.ajax request return me a full HTML text as a string. I receive such response in an case of error on the server. The server give me an error description which I want to place inside of the corresponding place of my current page. So now the question: I have a string contains full HTML document (which is not an XML!!! see <hr> element inside). I need to have for example only BODY part as a jQuery object. Then I could append it to the corresponding part of my page. Here is an example of the string which I need to parse: <html> <head> <title>The resource cannot be found.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} // ... </style> </head> <body bgcolor="white"> <span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1> <h2> <i>The resource cannot be found.</i> </h2></span> <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif "> <b> Description: </b>HTTP 404. The resource you are looking for ...bla bla.... <br><br> <b> Requested URL: </b>/ImportBPImagesInfos/Repository.svc/GetFullProfilimageSw<br><br> <hr width=100% size=1 color=silver> <b>Version Information:</b> Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1 </font> </body> </html> 

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In what language was MSDOS originally written?

- by nebukadnezzar

In what language was MSDOS originally written in? The Wikipedia Article implies either C, QBasic or Pascal, but: C was invented to write UNIX, so I don't believe it was used to write MSDOS Pascal seems popular to teach programming, but not really popular to write Operating systems in QBasic didn't seem to be very popular for Operating Systems at the time MSDOS was developed (or was *BASIC ever very popular to write Operating Systems in it?) Except these three languages there is also Assembly, but I assume that Microsoft already switched from Assembly to a "higher" level language? Since C was originally invented for UNIX, I still wouldn't think Microsoft is using C... although the Microsoft API is written in C (I find this kind-of oxymoronic, actually). Can anyone enlighten me on this topic?

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How do I get the sums of the digits of a large number in Haskell?

- by Tim

I'm a C++ Programmer trying to teach myself Haskell and it's proving to be challenging grasping the basics of using functions as a type of loop. I have a large number, 50!, and I need to add the sum of its digits. It's a relatively easy loop in C++ but I want to learn how to do it in Haskell. I've read some introductory guides and am able to get 50! with sum50fac.hs:: fac 0 = 1 fac n = n * fac n - 1 x = fac 50 main = print x Unfortunately at this point I'm not entirely sure how to approach the problem. Is it possible to write a function that adds (mod) x 10 to a value and then calls the same function again on x / 10 until x / 10 is less than 10? If that's not possible how should I approach this problem? Thanks!

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Need help on how to begin learning website development

- by Golfy

OK for the past 10 days I have been trying to figure out where to begin learning website development a dynamic one, So far everyone told me you should start with computer science and I am like What the @#$% how am I suppose to learn computer science without going to school and get a degree but I don't want a degree I just want to learn how to devlope websites. So now I am here and confused about how to put together a website. I get HTML and CSS but still have some problems designing the site now on the other had I am having trouble trying to figure out how php and database mysql is used to put together a website. I have seen videos from lynda.com and still have no Idea after I have watched the video the basic one, one that teach you the Variables, Loops, Strings ext... ok than what happens, how do you build the website with it, that is the question I am real not understand the answer to. Any help will be appreciated.

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How to point to jdni.properties file to set properties in Java

- by prosseek

I can use System.getProperties() method to set properties in Java. System.getProperties().put("java.naming.factory.initial", "fr.dyade.aaa.jndi2.client.NamingContextFactory"); System.getProperties().put("java.naming.factory.host", "localhost"); System.getProperties().put("java.naming.factory.port", "16400"); How can I get the same effect by reading the properties stored in a file? When I have a jdni.properties with the following content: java.naming.factory.initial fr.dyade.aaa.jndi2.client.NamingContextFactory java.naming.factory.host localhost java.naming.factory.port 16400 How can I teach Java to read them as properties?

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What is better for a student programming in C++ to learn for writing GUI: C# vs QT?

- by flashnik

I'm a teacher(instructor) of CS in the university. The course is based on Cormen and Knuth and students program algorithms in C++. But sometimes it is good to show how an algorithm works or just a result of task through GUI. Also in my opinion it's very imporant to be able to write full programs. They will have courses concerning GUI but a three years, later, in fact, before graduatuion. I think that they should be able to write simple GUI applications earlier. So I want to teach them it. How do you think, what is more useful for them to learn: programming GUI with QT or writing GUI in C# and calling unmanaged C++ library?

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