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  • Why does Facebook convert PHP code to C++?

    - by user72245
    I read that Facebook started out in PHP, and then to gain speed, they now compile PHP as C++ code. If that's the case why don't they: Just program in c++? Surely there must be SOME errors/bugs when hitting a magic compiler button that ports PHP to c++ code , right? If this impressive converter works so nicely, why stick to PHP at all? Why not use something like Ruby or Python? Note -- I picked these two at random, but mostly because nearly everyone says coding in those languages is a "joy". So why not develop in a super great language and then hit the magic c++ compile button?

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  • OAuth2 vs Public API

    - by Adam Tannon
    My understanding of OAuth (2.0) is that its a software stack and protocol to allow 2+ web apps to share information about a single end user. User A is a member of Site B and Site C; Site B wants to fetch some data from Site C about User A, and this is where OAuth steps in. So first off, if this assessment is incorrect, please begin by clarifying this for me and correcting me! Assuming I'm on the right track, then I guess I'm not seeing the need for OAuth to begin with (!). I'm sure I'm just not seeing the "forest through the trees" here, but the way I see it, couldn't Site C just expose a public API that Site B could use to fetch the same data (sans OAuth)? If Site C required user credentials to access the data, could this public API just use HTTPS for secure transport and require username/password as a part of each API call? Again, I'm sure I'm missing something, but I'm just not understanding why I would need OAuth when a secure, public API written and exposed by Site C seems more than capable of delivering what Site B needs regarding User A. In general, I'm looking for a set of guidelines to go by when deciding to choose between using OAuth for my web apps or just writing my own web service ( exposing public API). Thanks in advance!

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  • How do I check that my tests were not removed by other developers?

    - by parxier
    I've just came across an interesting collaborative coding issue at work. I've written some unit/functional/integration tests and implemented new functionality into application that's got ~20 developers working on it. All tests passed and I checked in the code. Next day I updated my project and noticed (by chance) that some of my test methods were deleted by other developers (merging problems on their end). New application code was not touched. How can I detect such problem automatically? I mean, I write tests to automatically check that my code still works (or was not deleted), how do I do the same for tests? We're using Java, JUnit, Selenium, SVN and Hudson CI if it matters.

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  • Rules Manager and Expression Filter getting removed

    - by Mike Dietrich
    I doubt that many people are using the Oracle features "Rules Manager" and "Expression Filter" as usually people handle these things (such as ensuring that a zip code or a car number plate has a certain format) within the application code and not inside the database. Oracle Beehive for instance uses that just on the side.  Anyway, just learned today that Rules Manager and Expression Filter components will get removed once our next database release most likely called Oracle Database 12c will get released. So before upgrading to Oracle Database 12c you can remove EXF and RUL components (SELECT COMP_ID FROM DBA_REGISTRY WHERE COMP_ID IN ('EXF','RUL'); ). You'd simply do that by executing the following script before upgrade:SQL> @?/rdbms/admin/catnoexf.sqlThis will clean up Rules Manager and Expression Filter components inside the database. You could run ?/rdbms/admin/catnorul.sql before but I believe catnoexf.sql will clean up everything already. And you'll find all this information plus guidelines for migration of existing content in MOS Note: 1233535.1 - Obsolescence Notice: Rules Manager and Expression Filter Features of Oracle Database -M.

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  • How to add a daemon to a quickly project

    - by darkrex1986
    Currently I'm developing an application with quickly which is divided in two parts: A graphical UI where the user could configure some things, and a daemon which do the most work in the background. I started with the UI, to create some windows for settings and so on. Now I want to start coding the daemon, but I have no clue how to implement the daemon in my quickly project. Could I simply paste the files of the daemon in project folder or is there an implementation method for adding new files to a quickly project? Or do I have to create a new project and merge them together?

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  • Linux Programmer moving to Windows

    - by cytinus
    I am a fairly proficient Linux programmer. I have been coding in Linux for 4 years, for both personal reasons and for profit. During those 4 years I have not even owned a computer running the Windows operating system. I am looking to expand my horizons into Windows programming, but am finding myself overwhelmed with the lack of what I perceive to be standardization. I feel as though different compilers follow different conventions, and all of the worthwhile IDEs cost money. Whats worse is that so many of the Tutorials are just terrible. If anyone else has taken the switch from Linux to Windows programming, what was the most helpful. What are the most straightforward IDEs and tutorials for using the API. I am looking to do mainly C and C++ development, along with some x86. I have found MASM primarily suits my needs for the latter.

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  • As a Qt GUI programmer, how to improve (career & skill)?

    - by linjunhalida
    hello, I'm a python & Qt programmer, and my daily job is create small PC GUI programs ship with hardware devices. the problem is, My job is simple, read/write data to device by using serial port(pyserial), display and edit data(PyQt + PyQwt), that's all. although I'm a linux user, my program is running under windows XP, but thanks to PyQt, I can still develop under linux. And I'm always afraid of being replaced by the people cheaper and younger than me in the future. (I'm 26 now.. not too much time for playing..) So I need improve myself, and make me more competitive in the global market, and I like programming, and want coding till the end of my life. any roadmap suggestion?

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  • A bacon- (and module-) saving PowerShell incident

    - by AaronBertrand
    Earlier today I made a big goof. I opened a module in Notepad, intending to use it as the basis for a new module. I was in the process of using "File > Save As" when my phone rang just at the precise instant that, for some reason, made me click on "File > Save" by mistake. After hitting Ctrl+Z 30 times to try to get the old version of the module back, I remembered that Notepad has never had more than one level of Undo. Back when I was coding ASP by hand, I was very well aware of this, but I...(read more)

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  • How do you stay motivated for hobby projects?

    - by aubreyrhodes
    I started seriously programming as a hobbiest, student and then intern about 4 years ago and I've always done small projects on the side as a learning exercise. Schools over now though, and I spend my days at work as a software developer. I would still love to do projects on the side to learn about areas in computer science that I'm not exposed to at work, but I've noticed that after 8 hours of starring at an IDE it's far to tempting to veg out. Any time I do get up the gumption to work on something for a few hours lately it's gotten left by the wayside. Anyone have any advice for sticking with side projects when you spend most of your day coding?

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  • Techniques to increase logic at programming

    - by u3050
    I am into programming since last 3 years. But I seems to be lost in it. I am not able to get good at it even though I code everyday. suppose I solve one problem, I will wander from solution to solution and implement some other solution. I cant focus much. I get many defects for the code I write. I afraid of code I dont know why if I dont finish it on time my boss will fire me etc. I enjoy coding but not all the time. How to increase patience? I always wonder how do I become the best coder like many exceptional programmers. I know this sounds subjective but I think this will help programmer community to get good at it especially for average like me or beginner programmers.

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  • Should I sell video tutorials on my own or via publishers like lynda.com? [closed]

    - by Derfder
    I am asking this because I am deciding between two models right now. One way is to create video tutorials on my own (make some short free videos and long pay per download/stream videos) or sell them to lynda.com or tutsplus. The 2nd way is easier, because they will do all the boring business stuff, will host the files to download etc. In that case, everything I need is a good microphone and obey their guidelines. On the other side if I do it on my own, I have to do all the unwanted business stuff, pay the server and other stuff. This is quite a big downside, however, I will have all the videos under my control in the future. I know that lynda.com has bigger attention and marketing that I am capable, but if you take e.g. phpvideotutrials.com (r.i.p ;), I think Leigh was very successful with relatively small budget. The interesting question will be the cost or how much will they pay me. Would it be less than if I sell it myself+monthly server hosting+other expenses? Any advice from people who actively sell their videos to some companies or do it on they own is highly appreciated.

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  • How much should I rely on Visual Studio's Auto Generated Code?

    - by Ant
    So I'm reading up on ASP.NET with VB.NET and I want to start making my own, professionally built website using ASP. I'm wondering though; I'm still using the basics so I'm really just a novice, but how much should I rely on Visual Studio to create my elements? Should I make my own text boxes and have my own login routine, or should I just use ASP's login features? I know eventually you have to use your own classes and such which is where the real coding comes in, but I'm not sure how relaible, flexible and secure the pre-wrote elements are? Any help would be greatly appreciated.

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  • duplicate pages

    - by Mert
    I did a small coding mistake and google indexed my site wrongly. this is correct form: https://www.foo.com/urunler/171/TENGA-CUP-DOUBLE-HOLE but google index my site like this : https://www.foo.com/urunler/171/cart.aspx first I fixed the problem and made a site map and only correct link in it. now I checked webmaster tools and I see this; Total indexed 513 Not selected 544 Blocked by robots 0 so I think this can be caused by double indexes and they looks not selected makes my data not selected. I want to know how to fix this "https://www.foo.com/urunler/171/cart.aspx" links. should I fix in code or should I connect to google to reindex my site. If I should redirect wrong/duplicate links to correct ones, what the way should be? thanks for your time in advance.

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  • What are the benefits of Android way of "saving memory" - explicitly passing Context objects everywhere?

    - by Sarge Borsch
    Turned out, this question is not easy to formulate for me, but let's try. In Android, pretty much any UI object depends on a Context, and has defined lifetime. It also can destroy and recreate UI objects and even whole application process at any time, and so on. This makes coding asynchronous operations correctly not straightforward. (and sometimes very cumbersome) But I never have seen a real explanation, why it's done that way? There are other OSes, including mobile OSes (iOS, for example), that don't do such things. So, what are the wins of Android way (Activities & Contexts)? Does that allow Android applications to use much less RAM, or maybe there are other benefits?

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  • what is the purpose of arrows?

    - by Simon
    I am learning functionnal programming with Haskell, and I try to grab concepts by first understanding why do I need them. I would like to know the goal of arrows in functional programming languages. What problem do they solve? I checked http://en.wikibooks.org/wiki/Haskell/Understanding_arrows and http://www.cse.chalmers.se/~rjmh/afp-arrows.pdf. All I understand is that they are used to describe graphs for computations, and that they allow easier point free style coding. The article assume that point free style is generally easier to understand and to write. This seems quite subjective to me. In another article (http://en.wikibooks.org/wiki/Haskell/StephensArrowTutorial#Hangman:_Main_program), a hangman game is implemented, but I cannot see how arrows makes this implementation natural. I could find a lot of papers describing the concept, but nothing about the motivation. What I am missing?

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  • Conventions for search result scoring

    - by DeaconDesperado
    I assume this type of question is more on-topic here than on regular SO. I have been working on a search feature for my team's web application and have had a lot of success building a multithreaded, "divide and conquer" processing system to work through a large amount of fulltext. Our problem domain is pretty specific. Users of the app generate posts, and as a general rule, posts that are more recent are considered to be of greater relevance. Some of the data we are trying to extract from search is very specific (user's feelings about specific items or things) and we are using python nltk to do named-entity extraction to find interesting likely query terms. Essentially we look for descriptive adjective-noun pairs and generate a general picture of a user's expressed sentiment as a list of tokens. This search is intended as an internal tool for our team to draw out a local picture of sentiments like "soggy pizza." There's some machine learning in there too to do entity resolution on terms like "soggy" to all manner of adjectives expressing nastiness. My problem is I am at a loss for how to go about scoring these results. The text being searched is split up into tokens in a list, so my initial approach would be to normalize a float score between 0.0-1.0 generated off of how far into the list the terms appear and how often they are repeated (a later mention of the term being worth less, earlier more, greater frequency-greater score, etc.) A certain amount of weight could be given to the timestamp as well, though I am not certain how to calculate this. I am curious if anyone has had to solve a similar problem in a search relevance grading between appreciable metrics (frequency, term location/colocation, recency) and if there are and guidelines for how to weight each. I should mention as well that the final fallback procedure in the search is to pipe the query to Sphinx, which has its own scoring practices. Sphinx operates as the last resort in case our application specific processing can't find any eligible candidates.

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  • Are Java's public fields just a tragic historical design flaw at this point?

    - by Avi Flax
    It seems to be Java orthodoxy at this point that one should basically never use public fields for object state. (I don't necessarily agree, but that's not relevant to my question.) Given that, would it be right to say that from where we are today, it's clear that Java's public fields were a mistake/flaw of the language design? Or is there a rational argument that they're a useful and important part of the language, even today? Thanks! Update: I know about the more elegant approaches, such as in C#, Python, Groovy, etc. I'm not directly looking for those examples. I'm really just wondering if there's still someone deep in a bunker, muttering about how wonderful public fields really are, and how the masses are all just sheep, etc. Update 2: Clearly static final public fields are the standard way to create public constants. I was referring more to using public fields for object state (even immutable state). I'm thinking that it does seem like a design flaw that one should use public fields for constants, but not for state… a language's rules should be enforced naturally, by syntax, not by guidelines.

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  • Find Waldo with Mathematica

    - by Jason Fitzpatrick
    If you’re looking for a geeky (and speedy) way to find Waldo, of the Where’s Waldo? fame, this series of Mathematica scripts makes it a snap. Over at Stack Overflow, programmer Arnoud Buzing shares a clever bit of Mathematica-based coding that analyzes a Where’s Waldo? drawing and finds the elusive Waldo. Hit up the link below to see the distinct steps of analysis with accompanying photos. How Do I Find Waldo with Mathematica? [via Make] 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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  • What Are Some Tips For Writing A Large Number of Unit Tests?

    - by joshin4colours
    I've recently been tasked with testing some COM objects of the desktop app I work on. What this means in practice is writing a large number (100) unit tests to test different but related methods and objects. While the unit tests themselves are fairly straight forward (usually one or two Assert()-type checks per test), I'm struggling to figure out the best way to write these tests in a coherent, organized manner. What I have found is that copy and Paste coding should be avoided. It creates more problems than it's worth, and it's even worse than copy-and-paste code in production code because test code has to be more frequently updated and modified. I'm leaning toward trying an OO-approach using but again, the sheer number makes even this approach daunting from an organizational standpoint due to concern with maintenance. It also doesn't help that the tests are currently written in C++, which adds some complexity with memory management issues. Any thoughts or suggestions?

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  • Operations on multiple overlapping layers not working

    - by Arun
    Hi I am developing a game in android just like Farmville by Zinga. In that game we have to place elements in the diamond shaped field so the don't overlap each other. Now I did coding for placing the field inside the farm field but I cannot stop the problem of overlapping of the farm field. I Am attaching the code that I have down for all this someone please help me.... try{ if(bm1.getPixel((int)initX,(int)initY)!=0){ if(bm1.getPixel((int)initX,(int)initY+20)!=0){ if(bm1.getPixel((int)initX-20,(int)initY)!=0){ if(bm1.getPixel((int)initX+20,(int)initY)!=0){ if(bm1.getPixel((int)initX,(int)initY-20)!=0){ c.drawBitmap(bm,initX-30,initY-20, paint); } } } } } }catch(Exception e) { Toast.makeText(getContext(), e.toString(), Toast.LENGTH_SHORT); }

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  • Apress "Introducing Visual C# 2010" - ISBN 978-1-4302-3171-4 - Conclusion

    - by TATWORTH
    After having spent several weeks reading this book (1230 pages before the index!), I can thoroughly recommend this book as a practical introduction to Visual C# 2010 both to people learning C# and to experianced C# users. It introduces C# through practical examples then gives a good introduction to the Dot Net framework. After dealing with Data Access, it gives a brief introduction to variousUI technologies. The final section deals with advanced topics including a thoroughly practical intruction to windows services. There are copious coding examples and useful tips. Many chapters begin with a quick problem solver solution reference. In short "Introducing Visual C# 2010" in the words of the sub title, is an excellent start to your C# journey with an expert by your side leading by example.

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  • G+ Platform Office Hours -- Retrieving Profile Information with the Sign In Button

    G+ Platform Office Hours -- Retrieving Profile Information with the Sign In Button Join us for a live coding demo of the sign in button and how to retrieve profile information using it! Or skip ahead to what you really care about: Meet your presenters: goo.gl Render the Sign-In Button: goo.gl Add a Client ID: goo.gl See Sign-In Render: goo.gl Grab the user resource (with live XHR/REST debugging*!): goo.gl Retrieve and render the user resource: goo.gl *If you don't feel you need a debugging crash course, feel free to skip from 10:14 to 18:30. :) From: GoogleDevelopers Views: 659 17 ratings Time: 29:39 More in Science & Technology

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  • Scenario to illustrate how unit testing leads to better design

    - by Cocowalla
    For an internal training session, I'm trying to come up with a simple scenario that illustrates how unit testing leads to better design, by forcing you to think about things like coupling before you start coding. The idea is that I get the participants to code something first, without considering unit testing, then we do it again, but considering unit testing. Hopefully the code produced second time round should be more decoupled and maintainable. I'm struggling to come up with a scenario that can be coded quickly, yet can still demonstrate how unit testing can lead to better overall design.

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  • Advice on career change [on hold]

    - by user72406
    I am a software developer(sharepoint developer) with total 3 years of experience.Though using out of the box sharepoint excites me, i have aversion to code. i kinda cant put my brains in coding. i have my eyes on MBA now(only reason is to get rid of code). I wanted to rethink on this and need your expert advice and suggestions. As i am working currently in a hot skill(sharepoint 2013) technology, is it a good thought to go ahead and do MBA and change my career, or should i start liking what i do?? THough it is supposed to be a self decision, i needed views of experts to help me carve my niche. Regards Kiran

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  • How do I make the correct career decision in regards to product manager/QA vs programmer?

    - by Adel
    I'm curious about how to approach the issue of whether I should focus on programming or on QA/testing/product management. I know that the latter seems like a broad category( if so, think of it as "general IT support" for now). At the moment I'm stronger in QA/prod. mgt ; however I'd like to switch more to programming, and I see I may have this opportunity. Wouldn't it be easier to switch to QA/prod. mgt in the future, if I go into programming now; rather than trying the reverse-order(i.e. if I decided later to go into coding.. say around mid-30s then it'd likely be harder). Just looking for any advice or tips about how to see more clearly. Part of me is scared I can't handle the programming side, but part of me says since there's demand and I'm interested that it's still worth a shot.

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