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• PHP protected classes and properties, protected from whom?

  - by Andrew Heath

  I'm just getting started with OOP PHP via PHP Object-Oriented Solutions and am a little curious about the notion of protection in OOP. The author clearly explains how protection works, but the bit about not wanting others to be able to change properties falls a bit flat. I'm having a hard time imagining a situation where it is ever possible to prevent others from altering your classes, since they could just open up your class.php and manually tweak whatever they pleased seeing as how PHP is always in plaintext. Caution: all of the above written by a beginner with a beginner's understanding of programming...

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• Convert any currency string to double

  - by James

  I need to store multiple currencies in SQL server. I understand that SQL won't support all different types of currencies (unless I store it as a string, but I don't want to do that). My idea was to convert all the values from their currency format to a standard double and store that instead. Then just re-format based on the culture info when displaying. However, I have tried doing something like e.g. var cultureInfo = new System.Globalization.CultureInfo("en-US"); double plain = return Double.Parse("$20,000.00", cultureInfo); This doesn't ever seem to work it always throws a FormatException. Even removing the currency symbol and just trying to do this based on the number alone does the same thing. This is just an example I want to support pretty much any type of currency. Is there a standard way of stripping out currency and getting the value as a double?

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• Add wordwrap to decoded json text

  - by Gary

  Hi, I am using a simple script on my PHP webpage to decode and output JSON as text. However, what ever I try I can't get it to wordwrap the output. $file = file_get_contents('sample.txt'); $out = (json_decode($file)); echo $out->mainText; How can I get this script to wordwrap at 600 characters without chopping words in half? If possible, can you show me the whole script please as I am slowly learning. Thanks

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• StackOverflow Site Layout Problem in Chrome

  - by Laramie

  I was cleaning up one of my questions here and noticed that Stack Overflow's comments were overflowing into the right column in Chrome. The question is, what's the difference in CSS handling between Chrome and Firefox. I don't have access to Safari, Opera, et al. Can someone tell me in which browsers the error manifests? Is it just me? Here's the layout error: (my apologies to Tim Down for covering up his name with my comment bubble) Since I have no natural skill for good layouts and the whole process makes me sad, I wonder if someone can diagnose the error on StackOverflow and make a recommendation on how to avoid it. Is this a consequence of embedding a div inside a td? Plus I admit it. It's fun to point out an error on one of the greatest sites ever.

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• Optimal preferences for prefix queries with Oracle catalog (CTXCAT) index

  - by nw

  The documentation for Oracle Text gives this example of a prefix/substring preference setting for context and catalog indexes: begin ctx_ddl.create_preference('mywordlist', 'BASIC_WORDLIST'); ctx_ddl.set_attribute('mywordlist','PREFIX_INDEX','TRUE'); ctx_ddl.set_attribute('mywordlist','PREFIX_MIN_LENGTH', '3'); ctx_ddl.set_attribute('mywordlist','PREFIX_MAX_LENGTH', '4'); ctx_ddl.set_attribute('mywordlist','SUBSTRING_INDEX', 'YES'); end; What I need to know is whether the substring_index attribute is necessary if I only ever issue prefix searches, such as: SELECT title FROM auction WHERE CATSEARCH(title, 'cam*', '') > 0; TITLE --------------- CANON CAMERA FUJI CAMERA NIKON CAMERA OLYMPUS CAMERA PENTAX CAMERA SONY CAMERA 6 rows selected

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• What are the Hot and Cold observables?

  - by Sergey Aldoukhov

  I watched the video and I know the general principles - hot happens even when nobody is subscribed, cold happens "on demand". Also, Publish() converts cold to hot and Defer() converts hot to cold. But still, I feel I am missing the details. Here are some questions I'd like to have answered: Can you give a comprehensive definition for these terms? Does it ever make sense to call Publish on hot observable or Defer on cold? Is there differences between hot and cold definitions for IObservable and IEnumerable? What are the general principles you should take into account when programming for cold or hot? Any other tips on hot/cold observables?

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• How to monitor and maintain my grails application in live/production environment?

  - by fabien7474

  It is the first time I have ever launched live a website (with Grails web framework under Amazon EC2 platform and Cloud Foundry) and I realized quickly that I am not ready for monitoring and maintening correctly my application in production mode (fortunately the website is accessible to a very limited number of users) . The issues I have faced so far are: Cannot change my views. I need to redeploy my application I have no monitoring. I don't know who is connected, when do they sign in / sign out... Redploying my application (upload WAR + deploy) takes at least 30 minutes. I don't know how to restart my Tomcat server without a redeploy through Cloud Foundry ! ... So, my question is very simple: What tools (including grails plugins) and methods can you recommend me for taking me out from my current blindness?

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• Is there any reason to throw a DivideByZeroException?

  - by Atomiton

  Are there any cases when it's a good idea to throw errors that can be avoided? I'm thinking specifically of the DivideByZeroException and NullReferenceException For example: double numerator = 10; double denominator = getDenominatorFromUser(); if( denominator == 0 ){ throw new DivideByZeroException("You can't divide by Zero!"); } Are there any reasons for throwing an error like this? NOTE: I'm not talking about catching these errors, but specifically in knowing if there are ever good reasons for throwing them.

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• How does a programmer think?

  - by Gordon Potter

  This may be a hopelessly vague question. But I am interested to hear whatever logical thought processes people go through when learning a new concept or trying to get their brain around code they might not have ever seen before. Basically, what general steps does one take to to break down problems and what does it take to "get it"? If you were to diagram a flowchart of how your mental process works when you look at code or try to solve a problem what might it look like? What common references, tips, and mental assumptions do you find useful in problem solving? How is this different between different domains? For example in what ways is a web programmer's thought process similar or different from a traditional desktop app developer's process?

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• CFLAGS vs CPPFLAGS

  - by EB

  I understand that CFLAGS (or CXXFLAGS for C++) are for the compiler, whereas CPPFLAGS is used by the preprocessor. But I still don't understand the difference. I need to specify an include path for a header file that is included with #include -- because #include is a preprocessor directive, is the preprocessor (CPPFLAGS) the only thing I care about? Under what circumstances do I need to give the compiler an extra include path? In general, if the preprocessor finds and includes needed header files, why does it ever need to be told about extra include directories? What use is CFLAGS at all? (In my case, I actually found that BOTH of these allow me to compile my program, which adds to the confusion... I can use CFLAGS OR CPPFLAGS to accomplish my goal (in autoconf context at least). What gives?)

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• Mercurial - revert back to old version and continue from there

  - by Paolo

  I'm using mercurial locally for a project (it's the only repo there's no pushing/pulling to/from anywhere else). To date it's got a linear history. However, the current thing I'm working on I've now realised is a terrible approach and I want to go back to the version before I started it and implement it a different way. I'm a bit confused with the branch / revert / update -C commands in Mercurial. Basically I want to revert to version 38 (currently on 45) and have my next commits have 38 as a parent and carry on from there. I don't care if revisions 39-45 are lost for ever or end up in a dead-end branch of their own. Which command / set of commands do I need?

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• A strange problem using jquery in IE6.

  - by Tony

  I am using jquery load method to update divs , it works great until I test my code under IE6. The problem is : under IE6 , when I click a button to trigger a load method , the page is remaining unchanged until I move my cursor, that means if I click my mouse and keep my hand away from the mouse , the page is unchanged , if I move the mouse , the page is updated. This problem is only occurred under IE6 . IE7 , IE8, Firefox all have no problem. Have you guys ever encountered this kind of problem ?

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• CORE Keygen Problem

  - by David Schiefer

  Hi, after fighting several versions of the CoreKeyGen created by some "minamoto" guy, a new version has appeared. This version is particularly sophisticated and seems to modify the actual binary itself, using a dylib known as libbassmod.dylib (this is in the keygen's mac os folder). Has anyone ever come across this & can give me advice on how to stop it? If so, how can I stop the keygen? it seems like the library can see what calls my app makes and stop them somehow, I'm not too sure.

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• Visual Studio keeps changing resx files

  - by CFP

  Hello everyone ! I'm working on a VB.Net project and using SVN. I noticed that every time I use my main form, Visual studio slightly modifies my .resx file, which means that I keep having to re-commit it, which is quite an annoying thing. Has anybody experienced such problems? A diff file can be seen at http://synchronicity.svn.sourceforge.net/viewvc/synchronicity/trunk/Create%20Synchronicity/MainForm.resx?r1=272&r2=359&pathrev=359 Has anybody ever heard of this? Thanks, CFP.

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• How can a large number of developers write software together without either a cumbersome process or

  - by Mark Robinson

  I work at a company with hundreds of people writing software for essentially the same product. The quality of the software has to be high because so many people depend on it (not least the developers themselves). Because of this every major issue has resulted in a new check - either automated or manual. As a result the process of delivering software is becoming ever more burdensome. So that requires more developers which... well you can see it is a vicious circle. We now have a problem with releasing software quickly - the lead time even to change one line of code for a very serious issue is at least one day. What techniques do you use to speed up the delivery of software in a large organization, while still maintaining software quality?

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• Shoes and Gems and how to get them working.

  - by Pselus

  I have seen this question asked all over the internet and answered in many different ways. None of them seem to be working for me. I am trying to get Gems to work in Shoes (specifically the gem Mechanize). Whenever I use the code: Shoes.setup do gem 'mechanize' end require 'mechanize' It gives me the popup that says it is installing native extensions and sits at that screen for 30 minutes and longer (I've only ever waited as long as 30 minutes). I have seen people say that you should be putting the .gem files in ~/.shoes/+gem/gem (on OS X) but that hasn't worked for me. Neither has putting the source code for the gem there. On another odd note, both the gems RedCloth and Nokogiri come with Shoes...but using the above code for them gets me No such file to load errors for both of them. Anyone have any expertise in this area and can help me out?

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• calculated colum or stored proceedure or just php funcion needed ?

  - by mcgrailm

  I have an order table in MySQL database and is has a field/column which store the dattime stamp of when the order was placed and I need to calculate when the order must be shipped. I could probably figure out how to right a function to calculate the ship date and call that when ever needed but I think, not sure it may moake more sense to have the shipdate as a column that is somehow calculate in mysql. that being said I have Never used a stored procedure or created a calculated field. the later I think would be best but again not sure. I used to make calculated field all the time in FMP but I've gotten away from that program. if someone could point me in the right direction or tell me why it would be better to do it one way over another I'd appreciate it . thanks Mike

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• Android - Connectivity Questions

  - by Donal Rafferty

  I have a couple of questions about connectivity on Android, if anyone has any insight it would be great. What is the default when an application wants to wirelessly connect? Is it wlan? And if wlan is switched off or there is no access points around is it 3g or gprs? Is a device always ip connected? Or when its disabled from wlan or 3g does it lose its ip address? Is an application, for example the browser only ever connected to one ip address? Or can it be connected to multiple addresses for each radio such as gprs or wifi (wlan)? Can an application decide which connection to open a socket to? For example can I create an application and decide whether to connect the socket to the wlan or gprs? Or does the OS decide? Finally how do native applications handle connectivity? In the same manner?

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• OpenAL - determine maximum sources

  - by Bill Kotsias

  Is there an API that allows you to define the maximum number of OpenAL "sources" allowed by the underlying sound hardware? Searching the internet, I found 2 recommendations : keep generating OpenAL sources till you get an error. However, there is a note in FreeSL (OpenAL wrapper) stating that this is "very bad and may even crash the library" assume you only have 16; why would anyone ever require more? (!) The second recommendation is even adopted by FreeSL. So, is there a common API to define the number of simultaneous "voices" supported? Thank you for your time, Bill

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• Javascript function as a parameter to another function?

  - by Alex

  Hello there, I'm learning lots of javascript these days, and one of the things I'm not quite understanding is passing functions as parameters to other functions. I get the concept of doing such things, but I myself can't come up with any situations where this would be ideal? My question is: When do you want to have your javascript functions take another function as a parameter? Why not just assign a variable to that functions return value and pass that variable to the function like so: // Why not do this var foo = doStuff(params); callerFunction(foo); //instead of this callerFunction(doStuff); I'm confused as to why I would ever choose to do things as in my second example. Why would you do this? What are the use cases? Thanks!!

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• Asp.net Script manager conflicting with button

  - by DJPB

  Hi there. I'm working on an asp.net app and I have some controls that are created dinamically on the OnInit event. One of that controls is an asp button that has been working fine until now. When I add a ScriptManager to my page, that same button is unnable to postback. It's only working if a take the ScriptManager out. has anything like this ever appened to somebody else? Am I invalidating the page somehow? Tks ps: this is my scrip manager tag: <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true" EnableScriptGlobalization="true" EnableScriptLocalization="true"> </asp:ScriptManager> //My Dynamic Button: Button button1 = new Button { ID = "button1", Text = "Ok" }; button1.Click += new EventHandler(Button1_Click);

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• Uncheck all checkboxes in repeater except checkbox being checked

  - by Chris Laythorpe

  I know my question reads a bit like that 'how much wood can a woodchuck chuck' line, please excuse that... I have a repeater with checkboxes. There are numerous rows in this repeater - I never know how many - I want only one checkbox checked at any time. If the user changes the checked checkbox, any pre-existing checks are unchecked therefore maintaining a single checked checkbox. I am using VB, but comfortable to port any C#. I want to use JQuery. I have been looking on Google, but only ever seem to find ALL checked, ALL unchecked systems. Any suggestions?

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• How to use Zend Cache with SimpleXML objects?

  - by Jeremy Hicks

  I'm trying to cache the user timeline of a Twitter feed using Zend_Service_Twitter which returns its results as a SimpleXML object. Unfortunately the regular serialize functions (which Zend Cache uses) don't play nice with SimpleXMl objects. I found this http://www.mail-archive.com/[email protected]/msg18133.html. So it looks like I'll need to create some kind of custom frontend for Zend Cache to be able to change the serialize function used. Anybody ever done this already or can point me where to look to start?

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• "No context-sensitive help installed" , "user32.dll" and "uxtheme.dll" AV errors on Delphi with no reason

  - by Javid

  This is very strange guys. I wrote a simple application. When I make my commands executed fast by moving mouse (event is on mouse move), I experience the following errors if I run my application without debugger (if I do, application just hangs and nothing happens): 1- "No context-sensitive help installed" however i haven't used help in my app. 2- Access violation errors from "uxtheme.dll" and "user32.dll" libraries! well, i think these errors happen when Windows Messages are sent quickly one after another. I came across these errors a while ago in a huge application. In both application I used SendMessage command, but what am i doing wrong? I'm now using Delphi 2010 Has anyone ever experienced this?!

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• Get status of servlet request before the response is returned

  - by Alex

  Good evening, I am in the process of writing a Java Servlet (Struts 2, Tomcat, JSP etc) which is capable of doing some fairly complex simulations. These can take up to 2 minutes to complete on the and will return a graph of the results. It is trivial to calculate the percentage of the simulation completed because the process works by repeating the same calculations 1000s of times. I would be interested to know if anyone has ever tried to use client side technology to provide any estimate of the percentage complete. I.e query the servlet processing to get the number of cycles completed at various point throughout the simulation. This could then be displayed as a bar in the client browser. Any thoughts, advice, resources would be much appreciated. Thanks, Alex

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