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  • Single or multiple return statements in a function [on hold]

    - by Juan Carlos Coto
    When writing a function that can have several different return values, particularly when different branches of code return different values, what is the cleanest or sanest way of returning? Please note the following are really contrived examples meant only to illustrate different styles. Example 1: Single return def my_function(): if some_condition: return_value = 1 elif another_condition: return_value = 2 else: return_value = 3 return return_value Example 2: Multiple returns def my_function(): if some_condition: return 1 elif another_condition: return 2 else: return 3 The second example seems simpler and is perhaps more readable. The first one, however, might describe the overall logic a bit better (the conditions affect the assignment of the value, not whether it's returned or not). Is the second way preferable to the first? Why?

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  • How do I find which isometric tiles are inside the cameras current view?

    - by Steve
    I'm putting together an isometric engine and need to cull the tiles that aren't in the camera's current view. My tile coordinates go from left to right on the X and top to bottom on the Y with (0,0) being the top left corner. If I have access to say the top left, top right, bottom left and bottom right corner coordinates, is there a formula or something I could use to determine which tiles fall in range? This is a screenshot of the layout of the tiles for reference. If there isn't one, or there's a better way to determine which tiles are on screen and which to cull, I'm all ears and am grateful for any ideas. I've got a few other methods I may be able to try such as checking the position of the tile against a rectangle. I pretty much just need something quick. Thanks for giving this a read =)

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  • how to contribute the same source code to two separate open-source projects?

    - by Jason S
    Let's say there are two similar open source projects A and B, both licensed under the Apache Software License 2.0. I would like to contribute an improvement to both projects (because I don't know which one is administered better, and I would like to see my improvement show up in both). Is there a way I can contribute this improvement to both projects in a simple way? (One obvious approach is to start an open source project C licensed under Apache 2.0, but that's a headache for various reasons; I don't want to maintain a project myself)

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  • How to find siblings of a tree?

    - by smallB
    On my interview for an internship, I was asked following question: On a whiteboard write the simplest algorithm with use of recursion which would take a root of a so called binary tree (so called because it is not strictly speaking binary tree) and make every child in this tree connected with its sibling. So if I have: 1 / \ 2 3 / \ \ 4 5 6 / \ 7 8 then the sibling to 2 would be 3, to four five, to five six and to seven eight. I didn't do this, although I was heading in the right direction. Later (next day) at home I did it, but with the use of a debugger. It took me better part of two hours and 50 lines of code. I personally think that this was very difficult question, almost impossible to do correctly on a whiteboard. How would you solve it on a whiteboard? How to apprehend this question without using a debugger?

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  • Managing text-maps in a 2D array on to be painted on HTML5 Canvas

    - by weka
    So, I'm making a HTML5 RPG just for fun. The map is a <canvas> (512px width, 352px height | 16 tiles across, 11 tiles top to bottom). I want to know if there's a more efficient way to paint the <canvas>. Here's how I have it right now. How tiles are loaded and painted on map The map is being painted by tiles (32x32) using the Image() piece. The image files are loaded through a simple for loop and put into an array called tiles[] to be PAINTED on using drawImage(). First, we load the tiles... and here's how it's being done: // SET UP THE & DRAW THE MAP TILES tiles = []; var loadedImagesCount = 0; for (x = 0; x <= NUM_OF_TILES; x++) { var imageObj = new Image(); // new instance for each image imageObj.src = "js/tiles/t" + x + ".png"; imageObj.onload = function () { console.log("Added tile ... " + loadedImagesCount); loadedImagesCount++; if (loadedImagesCount == NUM_OF_TILES) { // Onces all tiles are loaded ... // We paint the map for (y = 0; y <= 15; y++) { for (x = 0; x <= 10; x++) { theX = x * 32; theY = y * 32; context.drawImage(tiles[5], theY, theX, 32, 32); } } } }; tiles.push(imageObj); } Naturally, when a player starts a game it loads the map they last left off. But for here, it an all-grass map. Right now, the maps use 2D arrays. Here's an example map. [[4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 1, 1, 1, 1], [1, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 13, 1, 1, 1, 1, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 13, 1, 13, 13, 1, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 13, 1, 13, 13, 1, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 13, 1, 13, 13, 1, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 13, 1, 1, 1, 1, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 13, 13, 13, 13, 1, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 13, 13, 11, 11, 11, 13, 13, 13, 13, 13, 13, 13, 1], [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 13, 13, 13, 13, 13, 1], [1, 1, 1, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1]]; I get different maps using a simple if structure. Once the 2d array above is return, the corresponding number in each array will be painted according to Image() stored inside tile[]. Then drawImage() will occur and paint according to the x and y and times it by 32 to paint on the correct x-y coordinate. How multiple map switching occurs With my game, maps have five things to keep track of: currentID, leftID, rightID, upID, and bottomID. currentID: The current ID of the map you are on. leftID: What ID of currentID to load when you exit on the left of current map. rightID: What ID of currentID to load when you exit on the right of current map. downID: What ID of currentID to load when you exit on the bottom of current map. upID: What ID of currentID to load when you exit on the top of current map. Something to note: If either leftID, rightID, upID, or bottomID are NOT specific, that means they are a 0. That means they cannot leave that side of the map. It is merely an invisible blockade. So, once a person exits a side of the map, depending on where they exited... for example if they exited on the bottom, bottomID will the number of the map to load and thus be painted on the map. Here's a representational .GIF to help you better visualize: As you can see, sooner or later, with many maps I will be dealing with many IDs. And that can possibly get a little confusing and hectic. The obvious pros is that it load 176 tiles at a time, refresh a small 512x352 canvas, and handles one map at time. The con is that the MAP ids, when dealing with many maps, may get confusing at times. My question Is this an efficient way to store maps (given the usage of tiles), or is there a better way to handle maps? I was thinking along the lines of a giant map. The map-size is big and it's all one 2D array. The viewport, however, is still 512x352 pixels. Here's another .gif I made (for this question) to help visualize: Sorry if you cannot understand my English. Please ask anything you have trouble understanding. Hopefully, I made it clear. Thanks.

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  • Is it best to try to work at a company where your software directly makes the company money?

    - by Ryan Hayes
    I was told once that the best place to work as a developer is a company where the software you write is what makes the company money, whether it be software production or software services like consulting. This is opposed to a company where the software you write is just to support some other part of the business that makes the money, like manufacturing or finance. I know there are always exceptions, but in general, are employees treated better if they are on the front lines of profit generation, as opposed to being just another cost center? cost center (n.) - A cost center is part of an organization that does not produce direct profit and adds to the cost of running a company. Examples of cost centers include research and development departments, marketing departments, help desks and customer service/contact centers.

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  • Fix Your Broken Organization

    - by Michael Snow
    Simple. Powerful. Proven. Face it, your organization is broken. Customers are not the focus they should be. Processes are running amok. Your intranet is a ghost town. And colleagues wonder why it’s easier to get things done on the Web than at work. What’s the solution?Join us for this Webcast. Christian Finn will talk about three simple, powerful, and proven principles for improving your organization through collaboration. Each principle will be illustrated by real-world examples. Discover: How to dramatically improve workplace collaboration Why improved employee engagement creates better business results What’s the value of a fully engaged customer Time to Fix What’s Broken Register now for this Webcast—the tenth in the Oracle Social Business Thought Leaders Series.

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  • How to Remotely Shut Down or Restart Windows PCs

    - by Chris Hoffman
    Windows includes Shutdown.exe, a simple utility for remotely shutting down or restarting Windows computers on your local network. To use Shutdown.exe, you must first configure the PCs you want to shut down or restart remotely. Once you’ve configured the PCs, you can use a graphical user interface or command to restart the PCs from another Windows system. You can even remotely shut down or restart the PCs from a Linux system. How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

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  • SQL Saturday 40 - South Florida - July 31st 2010

    - by Herve Roggero
    Hi everyone - if you live in Florida, or if you will be in the area on July 31st come and see us! If would like to speak or attend, visit http://www.sqlsaturday.com/40/eventhome.aspx.  The event will be in Miramar, Florida - no too far from Fort Lauderdale. We had over 350 people show up last year and we will do better this year! We are also welcoming sponsors for this event. Thank you for spreading the word!

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  • What is a Histogram, and How Can I Use it to Improve My Photos?

    - by Eric Z Goodnight
    What’s with that weird graph with all the peaks and valleys? You’ve seen it when you open Photoshop or go to edit a camera raw file. But what is that weird thing called a histogram, and what does it mean? The histogram is one of the most important and powerful tools for the digital imagemaker. And with a few moments reading, you’ll understand a few simple rules can make you a much more powerful image editor, as well as helping you shoot better photographs in the first place. So what are you waiting for? Read on!  What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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  • Online Poker Game Programming

    - by Eyal
    I am trying to write a massive online multiplayer client for a poker site, where one user can be on a Flash client and the other on say an iOS client (iPhone / iPad), and would like to know how can interaction between two users be visible on both clients. What would be better to use? Should I use MSMQ? AJAX? Something other? I need the messaging layer (client interaction messages) to scale up to 100K+ online users to begin with. In other words; What scalable technology can I use to make game interactions between online users visible to all game participants?

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  • How can I manage changes between a local config file and a remote config file in a mobile application?

    - by hib
    I have an application with a configuration file that is stored in the application bundle. This config file stores the names of images on a remote server. Whenever the application is started, I download the configuration file from the server and see if there are any changes or updates. If there are changes, I iterate over the array of configuration settings and download the changed images to the user's iPhone I think that I will first list all of the name changes in an array, and after that start loading that changed images. However, I'm wondering if there is a better approach to solving this problem.

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  • Updates and New Home for Sticky Plugin

    Ive created a permanent home for the latest updates for Sticky. Please visit http://johnpapa.net/sticky to stay updated on the latest versions, enhancements, and how tos for Sticky. To download the latest update go here. The latest update includes some bug fixes and added a few enhancements in the latest version: 1.0.50605. Here are the highlights: Choose your Sticky color in the Settings Numbers are formatted Better error handling for invalid data Minor graphical fixes The Settings...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Recommended Reading for Polishing JavaScript coding style?

    - by wml653
    I've been coding in JavaScript for a while now and am fairly familiar with some of the more advanced coding features of the language (closures, self-executing functions, etc). So my question is, what advanced books/blogs/or anything else would be recommended to help tighten up my coding style? For example, recently I was coding something similar to: var x = ['a', 'b', 'c']; var exists = false; for(var i = 0; i < x.length; i++){ exists = x[i] === 'b' ? true : exists; } But found that the following condensed code would work better: var y = {'a':'', 'b':'', 'c':''}; var exists = 'b' in y; Both store the same value in 'exists', but the second is less common, but much cleaner. Any suggestions for where I should go to learn more tricks like this?

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  • Skype does not save configuration

    - by varsketiz
    Hello, on ubuntu 10.10, I have recently started to experience this problem: for some reason skype wont save any settings except "sign in on startup" when skype starts and tries to sign in it is unsuccessful (it shows incorrect password, in red) every time. no matter if I have provided good password the last time. I always have to click to show contacts in groups, it does not remember it. Every time I have to go to options and update some notification settings. I know all these things should be "remembered" by skype - this problem started only recently. I don't recall fiddling with any permissions that could have likely caused that. Do you know what the problem might be? I tried uninstall (marking complete configuration removal) and install fresh, but it still remembers my username (why??) Can I find skype configuration files on the filesystem somewhere and change permissions for them - or even better - edit the files to set what I want..?

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  • Git bug branching convention

    - by kisplit
    I've been following the successful Git branching model guide for most of my development. I still wonder if the way I handle bug tickets is correct. My current workflow: Once I accept a bug ticket I will do a git checkout -b bug/{ticket_number}, create a single commit as a fix and then checkout develop and do a git merge --no-ff. I'd love to hear from the experiences of others whether or not I am abusing the --no-ff option in this instance. If I am, could someone suggest a better approach?

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  • Python Multiprocessing with Queue vs ZeroMQ IPC

    - by Imraan
    I am busy writing a Python application using ZeroMQ and implementing a variation of the Majordomo pattern as described in the ZGuide. I have a broker as an intermediary between a set of workers and clients. I want to do some extensive logging for every request that comes in, but I do not want the broker to waste time doing that. The broker should pass that logging request to something else. I have thought of two ways :- Create workers that are only for logging and use the ZeroMQ IPC transport Use Multiprocessing with a Queue I am not sure which one is better or faster for that matter. The first option does allow me to use the current worker base classes that I already use for normal workers, but the second option seems quicker to implement. I would like some advice or comments on the above or possibly a different solution.

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  • Language-independent sources on collision detection

    - by Phazyck
    While making a Pong clone with a friend, we had to implement some collision detection. For research purposes, my friend dug up a book called "AdvancED Game Design with Flash" by Rex Van Der Spuy. This book was clearly targeted at implementing collision detection in ActionScript, and I also have some problems with how the concepts are presented, e.g. presenting one method as better than another, without explaining that decision. Can anyone recommend some good material on collision detection? I'd prefer it if kept the implementation details as language-independent as possible, e.g. by implementing the concepts in pseudo-code. Language-specific materials are not completely unwelcome though, though I'd prefer those to be in either Java, C#, F# or Python or similar languages, as those are the ones I'm most familiar with. :-) Lastly, is there perhaps widely known and used book on collision detection that most people should know about, like a 'the book on collision detection'?

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  • Start Your Session Search: Content Catalog is Live

    - by RichSchwerin
    Untitled Document Search through nearly 300 exhibitors and 1,600 sessions across 80 tracks, plus speakers and demos With Oracle OpenWorld 2011 just 15 weeks away, Content Catalog is now available online. That means you can browse through almost 300 exhibitors and nearly 1,600 content sessions across more than 80 different tracks, along with scores of demos. Even better, you can perform keyword searches for subjects that interest you most, from Active Data Guard to ZFS (and everything in between). But wait, there's more... Speaker Catalog--a veritable Oracle Who's Who--is also live online. You can search through hundreds of speakers, with names, titles, companies, and which sessions they're presenting. Save $500: Register Today Now that you've seen all the great content and speakers lined up for Oracle OpenWorld 2011, join us in San Francisco, October 2-6. Register by the Early Bird deadline of July 29th and save $500.

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  • How to make Classic ASP interesting if you are stuck with it?

    - by reno812
    I used to work on a really small outsourcing company (4 programmers and the boss), then when the stress and the frequent long shifts made the situation unbearable I made the switch to a better paid job with a more relaxed schedule that allows me some more free time. The problem, however, is that for the most part, everything is coded in Classic ASP that interfaces with a custom made C++ queueing system that stores everything in AS400 systems. My boss used to be one of the developers that made the initial efforts towards this, and naturally won't ever approve a switch to another languages / technologies despite the increasing difficulty that represents developing today business needs with yesterday tools. I'm pretty much stuck coding with Classic ASP in the foreseeable future, and I'm struggling to find ways to make it at least interesting, as I used to work with .NET and Java previously, and I feel like I'm going backwards... Any advice?

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  • Shouldn't we count characters of code and comments instead of lines of code and comments? [closed]

    - by Gabriel
    Counting lines of code and comments is sometimes bogus, since most of what we write may be written in one or more lines, depending column count limitations, screen size, style and so forth. Since the commonly used languages (say C, C++, C# and Java) are free-form, wouldn't it be more clever to count characters instead? Edit: I'm not considering LOC-oriented programming where coders try to artificially match requirements by adding irrelevant comments or using multiple lines where less would be enough (or the opposite). I'm interested in better metrics that would be independent of coding style, to be used by honest programmers.

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  • Enabling/disabling proftpd accounts with PHP and WHM

    - by Brett G
    I have a VPS with WHM/CPanel which is being used just by me. It's utilizing proftpd. I'd like to, via a PHP script, disable/enable a specific FTP account. I've done this by having PHP call a bash script which removes/adds the user account line to /etc/proftpd/USERNAME password file. However, in order to do this I have to give other write rights to /etc/proftpd/USERNAME. This isn't ideal, and I'd be willing to do it another way. It also seems like WHM is automatically resetting these permissions on a regular basis. Does anybody have any ideas on a better way to deal with this?

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  • How to Use the New Task Manager in Windows 8

    - by Chris Hoffman
    The Task Manager in Windows 8 has been completely overhauled. It’s easier-to-use, slicker, and more feature-packed than ever. Windows 8 may be all about Metro, but the Task Manager and Windows Explorer are better than ever. The Task Manager now manages startup programs, shows your IP address, and displays slick resource usage graphs. The new color-coding highlights the processes using the most system resources, so you can see them at a glance. Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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  • Electronic Arts Talks about their Upgrade to Oracle E-Business Suite Release 12

    Electronic Arts Inc. is a leading global interactive entertainment software company. EA develops, publishes, and distributes interactive software worldwide for video game systems, personal computers, wireless devices and the Internet. EA uses many Oracle products such as E-Business Suite, Demantra, PeopleSoft, Hyperion, Fusion Middleware, etc . Last year, EA needed an ERP Transformation and wanted to move to one global single instance to manage their business better. They decided to migrate from E-Business Suite 11.5.9 to Release 12 to get the added functionality they needed.

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  • Are the famous websites handmade? [closed]

    - by Mithun Chuckraverthy
    I'm a newbie in web designing. I always wanted to build a professional quality website by myself. So, I started learning HTML/XHTML and CSS for presentation; and, JavaScript and PHP/MySQL for scripting. I wonder, would the developers of famous websites design them by hand? Or, have they found out any better idea of using softwares? If so, can you tell me what are they? (By the word famous, I mean any websites that are liked by millions of people all over the world. Like: Google, Facebook etc.) Thanks in advance!

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