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• What is the best language to use for building a fulfillment engine [on hold]

  - by John Stapleton

  I asked this on stack overflow and was suggested to move it here. I do understand it is a matter of opinion which is exactly what I aim to achieve here... I wanted to know what you think is the best language to write a fulfillment engine in? I cannot provide much detail but I am trying to build a control interface for servers and i wanted to build a program daemon that would process data on the authoritative server and the slave servers( the backbone of the network) with their own daemons running would check regularly(every 5 minutes or so) with the authoritative server and process the commands(securely) I am trying to build this with a minimal footprint(cpu and ram wise for the slaves, authoritative is going to be scalable) and to make it automated so that the user does not have to configure the daemon(installation is automated by the authoritative server) I am leaning away from my usual php set up for simplicity sake. Edit: I am not an expert in any particular language but flexible enough and willing to learn another.

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• Is C# freelance possible? [closed]

  - by Chelios

  I am currently a junior C# developer. C# lets me write a big variety of all kinds of programs: I can create standalone programs aswell as websites. But I would like to do some freelance after I get good C# skills. Does C#/.NET (basically, all the Microsoft platmorm: ASP.NET, ADO.NET, MS SQL server) demand in the freelance world? Is it effective to freelance as C# developer? By effective I mean easy to find customers and good money. Thanks!

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• How can I search a Drupal site with the new Unity lens?

  - by Ognjen

  I'm creating a simple Unity lense for my college site which is based on Drupal, but I don't know how to adapt this command for Drupal API. Please help, it's python. We now create our query url, using the Wikipedia opensearch API url = ("%s/w/api.php?action=opensearch&limit=25&format=json&search=%s" % (self.wiki, search)) I'm using template to write lense following Wikipedia example http://developer.ubuntu.com/2012/04/how-to-create-a-wikipedia-unity-lens-for-ubuntu/. I don't know python but Im familiar with C. This Drupal API calling is the only problem I have to successfully develop a lense. Please help!

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• Transitioning from Chemical engineering to software industry what to do??

  - by console cowboy

  Hello all. Currently I am in my last semester of Engineering & has made my mind to switch to software field but given my knowledge of programming limited only to C. I am confused what to do next.Currently i have two choices. Get good at C, learn Python & write some good code/Apps & increase my employability chances. Do some Java/.Net certifications to increase my employability chances? Any kind of advice/suggestion is highly welcomed. P.S:I am also good at Linux & have a above average knowledge of operating systems. P.p.s: Advice from Indian Programmers would be beneficial.

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• Refactoring While Programming

  - by Kirby

  When posed with a problem, particularly when it is complicated in nature, I try to take some time to think about the approach I am going to take to solve the problem. Despite this, what often happens is, as I am programming the solution, I start to think of details of the problem that I missed, and I adjust the code accordingly. What results is a mess of code that needs to be refactored. I want to "refactor as I go," but while it sounds easy enough to do, I have a really hard time doing it. When the detail that I missed is small, it is tempting to make a small update to my design, rather than erase what I've already written and write it the way it is supposed to be. It sounds like a question with an obvious answer, but are there any techniques to use to better "refactor as you go"? I know that this is a good principle, but I fail with it time and time again.

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• how to read the password from variable?

  - by Viswa

  I am trying to move my file to another system which is located in some other place, with this command: rsync -avrz src destination It works fine. But what I need is to put this command in shell script and run it like: #! /bin/sh rsync -avrz srcfilelocation destination When it runs, it asks for the destination system password. I know that password and give it manually. Now I have decided to assign the password to an environment variable, like pswd="destination system password". I need my shell script to read the password from this variable. How can I write a script to do this?

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• How do I create and link to a database in ASP.NET (Razor) with Visual studio 2013?

  - by Blake

  We have a simple web app, part of which allows users to create accounts and then, hopefully soon, to write blog posts. The user log in system is working great, it utilizes the given .sdf database created when a new project is created. We would like to expand it now to allow for blog data (the title, body of the blog, image posts perhaps, etc). However, I'm unsure of how to add another table to the user database for this purpose - or if that would even be best since it has sensitive information in it. I've been reading blog post after blog post and still can't find anything current on this. All of the articles are for MVC projects or older versions of VS. If someone could point me in the right direction it would be greatly appreciated!

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• What are some good examples of using pass by name?

  - by Paul

  When I write programs I using pass by value or pass by reference always seem to be logical methods. When learning about different programming languages I came across pass by name. Pass by name is a parameter passing method that waits to evaluate the parameter value until it is used. See Stack Overflow pass by name question for more information on the method. What I would like to know is: what are some good examples and/or reasons to use pass by name and should it be re-introduced into some more modern languages.

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• Why Java as a First Language?

  - by dsimcha

  Why is Java so popular as a first language to teach beginners? To me it seems like a terrible choice: It's statically typed. Static typing isn't useful unless you care a lot about either performance or scaling to large projects. It requires tons of boilerplate to get the simplest code up and running. Try explaining "Hello, world" to someone who's never programmed before. It only handles the middle levels of abstraction well and is single-paradigm, thus leaving out a lot of important concepts. You can't program at a very low level (pointers, manual memory management) or a very high level, (metaprogramming, macros) in it. In general, Java's biggest strength (i.e. the reason people use it despite the shortcomings of the language per se) is its libraries and tool support, which is probably the least important attribute for a beginner language. In fact, while useful in the real world these may negatives from a pedagogical perspective as they can discourage learning to write code from scratch.

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• Learning low latency C++ and Java?

  - by user997112

  I'm currently in a role where I dont get to write any C++ or Java. However, the role is good because provides me with exposure to the business side (i'm interested in finance). Eventually I would like to get into high frequency trading infrastructure. Therefore, outside of work hours i'd like to maximise the knowledge I can gain about high performance Java and C++. I already have the Java Performance Tuning book, which is ok but not impressive. Can people recommend anymore latency blogs/books/websites for learning about making C++/C/Java or even Unix very fast? Or perhaps making the network parts of the OS (if re-writing Unix components) faster? EDIT: Or perhaps we could make this THE thread for advice on writing fast code

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• Open Source: Is Testing/Bug Reporting A Major Contribution?

  - by dsimcha

  When evaluating contributions to open source projects, does testing the code on various real-world inputs, reducing a large number of complicated bugs to small test cases and filing good bug reports count as a significant contribution? I've done this for several open-source projects (specifically D compilers) where I wanted to help out but the codebase was too complicated to learn my way around in the amount of spare time I have. I'm interested in both the perspective of the main developers (those that write the code and fix the bugs) and from the perspective of employers (in case I want to put it on my resume at some point).

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• Selenium-Nunit Program Structure

  - by Jacobm001

  My office has a suite of web reporting engines written in VB. All in all there's about 300 reports with varying displays depending on the data being input into them. I'm trying to establish an efficient way to deal with such a major diversity, but am struggling with creating a system that won't be a nightmare to code/maintain. What I've considered doing is: On program launch, read the steps required for each test page. This may have multiple tests for the same page with varying inputs. Write each iteration of the test in XML file under $env:temp/testname Use the TestCaseSource attribute of Nunit to funnel every related xml file as a source. My major stumbling block has been how to get that data to the Nunit framework. Is Nunit really appropriate for what I'm trying to do, or is it too static?

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• Dashboard to aggregate Google Analytics, Facebook, YouTube etc tracking data?

  - by Richard

  I'd like to see as much tracking data as possible about my online presence, in one single dashboard - so views/conversions from Google Analytics data, the performance of my Facebook campaigns via the Insights API, views/clicks from my YouTube campaigns, etc. This could be as simple as a graph with time on the x-axis, and key indicators from each source on the y-axis (conversions from Analytics, likes on Facebook, views on YouTube, etc). The idea is that I can see customer engagement with each source, over time. I can write my own such dashboard easily enough, but I wondered if there was something off-the-shelf that already did this. Apologies if this isn't the right forum for such a question - would appreciate tips for the best place to ask.

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• How to detect GLSL warnings?

  - by msell

  After compiling a shader with glCompileShader, I can call glGetShaderiv with GL_COMPILE_STATUS to check if the shader compiled successfully. I can also call glGetShaderInfoLog to get information about possible errors, warnings or other info. The information log returned by this function is unspecified. In a tool where users can write their own shaders, I would like to print all errors and warnings from the compilation, but nothing if no warnings or errors were found. The problem is that the GL_COMPILE_STATUS returns only false if the compilation failed and true otherwise. If no problems were found, some drivers return empty info log from glGetShaderInfoLog, but some drivers can return something else such as "No errors.", which I do not want to print to the user. How is this problem generally solved?

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• Google Dart vs CoffeeScript? Which one should one learn?

  - by garbage collection

  I was thinking about learning CoffeeScript some time in the future. In the mean time, Google came out with Dart that seems to do what CoffeeScript does. Google says: Dart code can be executed in two different ways: either on a native virtual machine or on top of a JavaScript engine by using a compiler that translates Dart code to JavaScript. This means you can write a web application in Dart and have it compiled and run on any modern browser. Does anyone know advantages and disadvantages of learning Dart or CoffeeScript?

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• What are good JS libraries for game dev? (HTML5)

  - by acidzombie24

  If i decide to write a simple game both text and graphical (2d) what libs may i use? Assuming we are using a HTML5 compatible browser. The main things i can think of Rendering text on screen Animating sprites (using images/css) Input (capturing the arrow keys and getting relative mouse positions) Perhaps some preloading resource or dynamically loading resources and choosing order Sound (but i am unsure how important this will be to me at first). Perhaps with mixing and chaining sounds or looping forever until stop. Networking (low priority) to connect a user to another or to continuously GET data without multiple request (i know this exist but i dont know how easy it is to setup or use. But this isnt important to me. Its for the question).

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• Worst code I've written in a while

  - by merrillaldrich

  Here's a nice, compact bit of WTF-ery I had to write for a prod issue today: Again: UPDATE TOP ( 1 ) dbo . someTable SET field3 = 'NEW' WHERE field2 = 'NEW' AND field3 = '' IF @@ROWCOUNT > 0 GOTO Again Can you guess from the code what awesomesauce issues I was working around? This was a reminder for me that sometimes there is time to do it right, but sometimes you just have to do it now. I need that lesson sometimes, as I tend to be a perfectionist. If you are trying to do it right , please don't...(read more)

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• Programming Challenges for a beginner

  - by JMK

  I'm in an unusual situation. A colleague of mine wants to "learn programming" and, being a developer I have been tasked with teaching him "programming". Personally, I am self taught, and have never taught any sort of skill to anybody else before so I am not quite sure where to start. Also, I still have a heck of a lot to learn myself (although don't we all)! I write in C# but is C# a good language for a beginner? I was thinking that Visual Basic .Net would be a better starting point, so was considering getting him setup with Visual Studio Express 2010, teaching him a few basics (variables, functions, classes etc) then finding some programming challenges and asking him to work through these. Does anybody have a good source of these sorts of challenges? Also is this a good strategy? Finally, what are your experiences of teaching programming to somebody else and what advice would you give?

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• Sorting a REALLY BIG delimited text file in UNIX / VMS [closed]

  - by gunbuster363

  Hi everyone, I am going to sort a REALLY BIG delimited text file, say 250Mb (or a bunch of files of more or less than 250Mb) . It have 37 fields, and I need to sort it by 5 fields, for example 1st, 4th, 5th, 6th 7th fields. Under Unix / VMS, do I have a good option to do this FAST? I can write COBOL program. Now I am trying to sort them using the below command, but it already run for a long time and just not going to finished. Thank you. The command I used: time sort -t ',' -o sorted.txt +0 -1 +4 -5 +5 -6 +6 -7 +22 -23 *.DAT_gprscdr_ftpd

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• How can a programmer refine their skills in non-visual ways?

  - by Martin Josefsson

  I feel like when I am not writing, I am reading. When I come home from my programming job I write and read software and about software. The problem is though, both reading and writing requires my eyes to be focused. That doesn't work when I'm biking, cooking shopping for groceries. Sometime I use text-to-speech programs to listen to blogs, but I feel like there could be more. What ways can a software developer learn more without requiring eye focus? How to blind coders learn the craft?

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• Is it bad practice to use <?= tag in PHP

  - by marco-fiset

  I've come across this PHP tag <?= ?> recently and I am reluctant to use it, but it itches so hard that I wanted to have your take on it. I know it is bad practice to use short tags <? ?> and that we should use full tags <?php ?> instead, but what about this one : <?= ?>? It would save some typing and it would be better for code readability, IMO. So instead of this: <input name="someVar" value="<?php echo $someVar; ?>"> I could write it like this, which is cleaner : <input name="someVar" value="<?= $someVar ?>"> Is using this operator frowned upon?

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• Terra lang and Lua

  - by msalese

  I was reading on terralang site about terra language as "a new low-level system programming language that is designed to interoperate seamlessly with the Lua programming language..." Zach DeVito (the main author) write about the use of terra : A scripting-language with high-performance extensions..... An embedded JIT-compiler for building languages..... A stand-alone low-level language.... But (may be my fault) I don't understand if terra is: a luaJit competitor a better system to interface with c library something better than luaJit using llvm Can someone help me to better understand what is going on terralang project ? Thanks

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• Long running calculation on background thread

  - by SundayMonday

  In my Cocos2D game for iOS I have a relatively long running calculation that happens at a fairly regular interval (every 1-2 seconds). I'd like to run the calculation on a background thread so the main thread can keep the animation smooth. The calculation is done on a grid. Average grid size is about 100x100 where each cell stores an integer. Should I copy this grid when I pass it to the background thread? Or can I pass a reference and just make sure I don't write to the grid from the main thread before the background thread is done? Copying seems a bit wasteful but passing a reference seems risky. So I thought I'd ask.

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• Can desktop applications be written using javascript?

  - by jase21

  Is it currently possible to write desktop applications using javascript, html, css? Possible solutions: Use Adobe AIR runtime and program in js. But no, if I'm using AIR, the AS3 suites it the most. So not a good option. GWT: No because it uses Java and then convert it to js or what ever. Pyjamas: Interesting. But I'm currently focusing on JavaScript. So I don't want to use python and cross-compile to js. Run a local server and use the browser in full screen mode. Sort of okay, but still its the same browser thing. And difficult to distribute. So what is the best option? I'm excited about node.js which is the main reason for looking into JavaScript. Otherwise I would have choose python.

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• Architecture for html5 multiplayer game?

  - by Tihomir Iliev

  Hello I want to write a HTML5 multiplayer game in which there are rooms with two players answering a series of questions with 3 possible answers, 10sec/question, which are being downloaded from a server. It will have some ratings and so on. I want to make it as scalable as possible. I wonder what technologies to use to accomplish that. HTML5, CSS3 and JavaScript obviously. But what about the server-side? I have been researching and found that Socket.IO + Node.js + mongoDB would do the job but after doing some more research it maybe not. Can you suggest me some kind of architecture for doing this game? Free technologies, if possible. Or what to read and from where to start in order to understand how to do it. Thanx in advance! P.S. I have an experience with HTML5, CSS3, JavaScript, C#, ASP.NET MVC and relational db's.

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