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• Im having trouble getting SWFUplader to play ball in my codeigniter application

  - by Purplefish32

  I have this peice of code in my handler.js, I'm getting the correct serverData value throught ajax, ( Well it's echoed correctly un the alert box) but no matter what, i just cant seem to enter either of the 'if' blocks. I have double checked the type and it is a string. Something is definetly funky. function uploadSuccess(file, serverData) { try { var progress = new FileProgress(file, this.customSettings.progressTarget); alert(serverData); if(serverData == "uploadSuccess") { progress.setComplete(); progress.setStatus("Completed"); progress.toggleCancel(false); } if(serverData == "uploadError") { progress.setError(); progress.toggleCancel(false); progress.setStatus("Error: X"); progress.toggleCancel(false); } } catch (ex) { this.debug(ex); } }

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• Trouble creating a makefile

  - by catia

  Hi everyone! I'm having some trouble making a Makefile. Write now I just compile everything every time. Although, the professor is ok with that, I do want to get it working faster and to avoid unnecessary compiling. Here's what I have. FILES= p6.cpp SetIter.cpp Node.cpp Set.cpp CFLAGS= -ansi -pendantic -Wall -Wextra CC= g++ MakePg6: p6.cpp SetIter.cpp Node.cpp Set.cpp $(CC) $(CFLAGS) $(FILES) -o pg6 Node.cpp - node class Set.cpp - uses nodes. Friend of Node. SetIter.cpp - gets a set and uses a pointer to iterator through I'm confused with some of the depencies arising from the friends thing and the point of lib.o being included in the Makefile as some sites have. Any help is greatly appreciated. Thanks in advance.

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• pass by reference but reference to data and not to variable

  - by dorelal

  This is psesudo code. In what programming language this is possible ? def lab(input) input = ['90'] end x = ['80'] lab(x) puts x #=> value of x has changed from ['80'] to ['90] I have written this in ruby but in ruby I get the final x value of 80 because ruby is pass-by-reference. However what is passed is the reference to the data held by x and not pointer to x itself same is true in JavaScript. So I am wondering if there is any programming language where the following is true.

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• How to convert from integer to unsigned char in C, given integers larger than 256?

  - by Alf_InPogform

  As part of my CS course I've been given some functions to use. One of these functions takes a pointer to unsigned chars to write some data to a file (I have to use this function, so I can't just make my own purpose built function that works differently BTW). I need to write an array of integers whose values can be up to 4095 using this function (that only takes unsigned chars). However am I right in thinking that an unsigned char can only have a max value of 256 because it is 1 byte long? I therefore need to use 4 unsigned chars for every integer? But casting doesn't seem to work with larger values for the integer. Does anyone have any idea how best to convert an array of integers to unsigned chars?

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• Best way to track impressions/clicks in a bespoke advertisement system?

  - by Martin Bean

  I've been asked to create a bespoke advertisement system despite suggesting open source alternatives such as OpenX and DoubleClick for Publishers (the former Google Ad Manager). I've got the basics of the system set up, i.e. uploading creatives, creating positions and a mechanism to place creatives within positions; however, the area I'm stuck with is impression and click tracking. At the moment an impression and click is stored with the creative, but this then means impressions/clicks can't be queried. For example, we can't find how many impressions were in position x between date y and date z. How would I go about storing that kind of data? My theory was store the creative ID, position ID and timestamp in a database table, but given the amount of traffic the site has this would produce a very large database very quickly. If any one could give me a pointer or two, that would be great.

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• Placeholder containing dynamic table is empty unless I create table twice

  - by Mike O.

  I am dynamically creating a table that contains a textbox in each cell. The table is put in a placeholder control. Everything displays perfectly. The problem is when I go to retrieve the values entered in the cells. I have the code to generate the table in a separate method called CreateTable(). In order for my program to find a table in the placeholder when I go to save, I have to run CreateTable() in a postback event AND in the PageLoad event. If I call CreateTable() in only one of those places and I try to save, it says the placeholder is empty and, therefore, I cannot save the textbox contents. I've tried calling CreateTable() from InitLoad but that doesn't work because it needs to reference values from three static controls: 1 dropdown, 1 listbox, and 1 calendar control, which I don't believe have had their viewstate rendered yet. Anyone have any ideas? It would sure be nice not to have to double the number of database calls just to make this work.

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• What is the right way to pass class parameters to a method

  - by Schneider

  Let's suppose I have three classes A, B and C public class A { public int A1; public string A2; } public class B { public char B1; public double B2; public decimal B3; } public class C { public string DoSomething(A a, B b) { var a1 = a.A1; var b2 = b.B2; var b3 = b.B3; // DoSomething return string.Empty; } } If DoSomething() is using just some fields of the A and B classes, do you prefer to pass the whole object in parameters or create an intermediate class that has just the needed fields by the DoSomething method ?

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• Remove redundant entries, scala way

  - by andersbohn

  Edit: Added the fact, that the list is sorted, and realizing 'duplicate' is misleading, replaced that with 'redundant' in the title. I have a sorted list of entries stating a production value in a given interval. Entries stating the exact same value at a later time adds no information and can safely be left out. case class Entry(minute:Int, production:Double) val entries = List(Entry(0, 100.0), Entry(5, 100.0), Entry(10, 100.0), Entry(20, 120.0), Entry(30, 100.0), Entry(180, 0.0)) Experimenting with the scala 2.8 collection functions, so far I have this working implementation: entries.foldRight(List[Entry]()) { (entry, list) => list match { case head :: tail if (entry.production == head.production) => entry :: tail case head :: tail => entry :: list case List() => entry :: List() } } res0: List[Entry] = List(Entry(0,100.0), Entry(20,120.0), Entry(30,100.0), Entry(180,0.0)) Any comments? Am I missing out on some scala magic?

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• Why exactly is calling the destructor for the second time undefined behavior in C++?

  - by sharptooth

  As mentioned in this answer simply calling the destructor for the second time is already undefined behavior 12.4/14(3.8). For example: class Class { public: ~Class() {} }; // somewhere in code: { Class* object = new Class(); object->~Class(); delete object; // UB because at this point the destructor call is attempted again } In this example the class is designed in such a way that the destructor could be called multiple times - no things like double-deletion can happen. The memory is still allocated at the point where delete is called - the first destructor call doesn't call the ::operator delete() to release memory. For example, in Visual C++ 9 the above code looks working. Even C++ definition of UB doesn't directly prohibit things qualified as UB from working. So for the code above to break some implementation and/or platform specifics are required. Why exactly would the above code break and under what conditions?

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• Openning an App on click of link in email in android?

  - by Amit

  I have a strange requirement for my project.. Suppose I have an app say XYZ installed in an android phone and than I receive an email from the mail server which contains a link like http://XYZ.com/?params(i.e. X=1&Y=2&Z=3) now on click of this link I want to open the XYZ app if it is installed in the phone and in the Activity I would like to get these parameters X,Y and Z and if the app is not installed user should be redirected to play store for downloading XYZ app and after installation app takes charge and behaves as if it was already installed (Opening the first activity with those parameters). How can I achieve that ? I have no idea where to start so even the smallest pointer in right direction will be of great help.

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• Playing around with my Java project in Eclipse... what the crap did I just do?

  - by Daddy Warbox

  I don't even remember how, but somehow I managed to make all of my project's source files hidden in Eclipse's Package and Project Explorer panels. Go figure. 'Show Filtered Children (alt+click)' temporarily reveals the files, and only in Package Explorer can I double-click to reopen them from this view. They go back into hiding after I select another item, though. Plus, now I'm getting other annoyances, such as all of the folded non-hidden items altogether expanding when I click on an item, and the entire folder tree of my project now being shown in these panels (including my .svn subversion folders... which shouldn't be any of Eclipse's business, presently). Long story short, my Package/Project Explorers' just blew up on me, and I want to know how to fix this. Thanks in advance. P.S. What's a good guide I can use to learn my way around this silly contraption, anyway?

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• Open Folder within ClearCase Remote Client using Windows Explorer

  - by sammy

  Is there a way to open the folder location of a file from within CCRC? While I know I can open/copy from directly within CCRC, it is often useful to work directly with the file from within Windows Explorer. I am looking for something like "open file location" or "open in windows explorer". The folder within CCRC does not appear to allow opening it directly as the double-mouse-click action just expands the tree listing. The path is listed/copyable within the "ClearCase Details" tab, but I am trying to take my laziness to a whole new level by being able to open the folder with a single click. Any ideas if this is a feature available and where I can find it? Thanks. Info: Rational ClearCase Remote Client 7.1.1 Windows 7

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• C++: How to use types that have not been defined?

  - by Jen

  C++ requires all types to be defined before they can be used, which makes it important to include header files in the right order. Fine. But what about my situation: Bunny.h: class Bunny { ... private: Reference<Bunny> parent; } The compiler complains, because technically Bunny has not been completely defined at the point where I use it in its own class definition. This is not sufficient: class Bunny; class Bunny { ... private: Reference<Bunny> parent; } Apart from re-writing my template class Reference so it takes a pointer type (in which case I can use the forward declaration of Bunny), I don't know how to solve this. Any suggestions?

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• c struct map to ruby using SWIG

  - by pierr

  Hi, Is there any body can confirm the description here is true? My experience is that I can not use Example::Vector.new at all. C/C++ structs are wrapped as Ruby classes, with accessor methods (i.e. "getters" and "setters") for all of the struct members. For example, this struct declaration: struct Vector { double x, y; }; gets wrapped as a Vector class, with Ruby instance methods x, x=, y and y=. These methods can be used to access structure data from Ruby as follows: $ irb irb(main):001:0> require 'Example' true irb(main):002:0> f = Example::Vector.new #<Example::Vector:0x4020b268> irb(main):003:0> f.x = 10 nil irb(main):004:0> f.x 10.0

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• "Cannot use fixed local inside lambda expression"

  - by JulianR

  I have an XNA 3.0 project that compiled just fine in VS2008, but that gives compile errors in VS2010 (with XNA 4.0 CTP). The error: Cannot use fixed local 'depthPtr' inside an anonymous method, lambda expression, or query expression depthPtr is a fixed float* into an array, that is used inside a Parallel.For lambda expression from System.Threading. As I said, this compiled and ran just fine on VS2008, but it does not on VS2010, even when targeting .NET 3.5. Has this changed in .NET 4.0, and even so, shouldn't it still compile when I choose .NET 3.5 as the target framework? Searching for the term "Cannot use fixed local" yields exactly one (useless) result, both in Google and Bing. If this has changed, what is the reason for this? I can imagine capturing a fixed pointer-type in a closure could get a bit weird, is that why? So I'm guessing this is bad practice? And before anyone asks: no, the use of pointers is not absolutely critical here. I would still like to know though :)

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• Magento - Mage::getModel not working on remote server

  - by Diego

  I'm struggling with an issue for which I can't find an explanation. I have two development environments that I use for my projects. I created a simple module for Magento and I tested it on one environment. After overcoming all Magento's complications, the module works as expected. This is on XAMPP. I then copied the module to the development Linux environment, on a hosted server, and it crashes miserably. I did some debugging, and I found out that a call to Mage::getModel() returns bool(false) instead of the instance of the Model I requested. I double checked all files and directories, and they match. Database is not involved (not from my side, at least, I don't need tables) and both environments have only me as a User, with Admin permissions. Any suggestion on where should I start looking is welcome, thanks.

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• How do I implement a DataGrid with an MVVM approach.

  - by Fred

  Hi, I'd like to implement a sort of Addressbook/Contactbook using a Datagrid (or a List) and the MVVM pattern. Something like in Outlook/Thunderbird, where you've a list of your contacts displayed with a 2-3 main fields (name surname for example), and when you double-click a contact, then you get a new modal box that displays all the details of this specific contact. Since a couple of weeks/months, I'm reading a lot of stuff about MVVM pattern on the net, but somehow, I get confused. Until now, I could find any sample like this. (perhaps, I searched wrong?) How could I organize such an application? Thx in advance for your help.

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• Are self-described / auto-descriptive services loosely or tightly coupled in a SOA architecture ?

  - by snowflake

  I consider a self-described / auto-descriptive service as a good thing in a SOA architecture, since (almost) everything you know to call the service is present in the service contract (such a WSDL). Sample of a non self-described service for me is Facebook Query Language (FQL http://wiki.developers.facebook.com/index.php/FQL), or any web service exchanging XML flow in a one String parameter for then parsing XML and performing treatments. Last ones seem further more technically decoupled, since technically you can switch implementations without technical impact on the caller, handling compatibility between implementations/versions at a business level. On the other side, having no strong interface (diluted into the service and its version), make the service tightly coupled to the existing implementation (more difficulty to interchange the service and to ensure perfect compatibility). This question is related to http://stackoverflow.com/questions/2503071/how-to-implement-loose-coupling-with-a-soa-architecture So, are self-described / auto-descriptive services loosely or tightly coupled in a SOA architecture ? What are the impacts regarding ESBs ? Any pointer will be appreciated.

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• Android Out of memory regarding png image

  - by turtleboy

  I have a jpg image in my app that shows correctly. In my listview i'd like to make the image more transparent so it is easier to see the text. I changed the image to a png format and altered it's opacity in GIMP. Now that the new image is in the app drawable folder. Im getting the following error. why? 09-28 09:24:07.560: I/global(20140): call socket shutdown, tmpsocket=Socket[address=/178.250.50.40,port=80,localPort=35172] 09-28 09:24:07.570: I/global(20140): call socket shutdown, tmpsocket=Socket[address=/212.169.27.217,port=84,localPort=55656] 09-28 09:24:07.690: D/dalvikvm(20140): GC_FOR_ALLOC freed 113K, 4% free 38592K/39907K, paused 32ms 09-28 09:24:07.690: I/dalvikvm-heap(20140): Forcing collection of SoftReferences for 28072816-byte allocation 09-28 09:24:07.740: D/dalvikvm(20140): GC_BEFORE_OOM freed 9K, 4% free 38582K/39907K, paused 43ms 09-28 09:24:07.740: E/dalvikvm-heap(20140): Out of memory on a 28072816-byte allocation. 09-28 09:24:07.740: I/dalvikvm(20140): "main" prio=5 tid=1 RUNNABLE 09-28 09:24:07.740: I/dalvikvm(20140): | group="main" sCount=0 dsCount=0 obj=0x40a57490 self=0x1b6e9a8 09-28 09:24:07.740: I/dalvikvm(20140): | sysTid=20140 nice=0 sched=0/0 cgrp=default handle=1074361640 09-28 09:24:07.740: I/dalvikvm(20140): | schedstat=( 2289118000 760844000 2121 ) utm=195 stm=33 core=1 09-28 09:24:07.740: I/dalvikvm(20140): at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) 09-28 09:24:07.740: I/dalvikvm(20140): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:486) 09-28 09:24:07.740: I/dalvikvm(20140): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:773) 09-28 09:24:07.740: I/dalvikvm(20140): at android.content.res.Resources.loadDrawable(Resources.java:2042) 09-28 09:24:07.740: I/dalvikvm(20140): at android.content.res.TypedArray.getDrawable(TypedArray.java:601) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.View.<init>(View.java:2812) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.ViewGroup.<init>(ViewGroup.java:410) 09-28 09:24:07.740: I/dalvikvm(20140): at android.widget.LinearLayout.<init>(LinearLayout.java:174) 09-28 09:24:07.740: I/dalvikvm(20140): at android.widget.LinearLayout.<init>(LinearLayout.java:170) 09-28 09:24:07.740: I/dalvikvm(20140): at java.lang.reflect.Constructor.constructNative(Native Method) 09-28 09:24:07.740: I/dalvikvm(20140): at java.lang.reflect.Constructor.newInstance(Constructor.java:417) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.LayoutInflater.createView(LayoutInflater.java:586) 09-28 09:24:07.740: I/dalvikvm(20140): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:653) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:678) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.LayoutInflater.inflate(LayoutInflater.java:466) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 09-28 09:24:07.740: I/dalvikvm(20140): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 09-28 09:24:07.740: I/dalvikvm(20140): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:278) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.Activity.setContentView(Activity.java:1897) 09-28 09:24:07.740: I/dalvikvm(20140): at com.carefreegroup.ShowMoreDetails.onCreate(ShowMoreDetails.java:26) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.Activity.performCreate(Activity.java:4543) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1071) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2181) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2260) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.ActivityThread.access$600(ActivityThread.java:139) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1277) 09-28 09:24:07.740: I/dalvikvm(20140): at android.os.Handler.dispatchMessage(Handler.java:99) 09-28 09:24:07.740: I/dalvikvm(20140): at android.os.Looper.loop(Looper.java:156) 09-28 09:24:07.740: I/dalvikvm(20140): at android.app.ActivityThread.main(ActivityThread.java:5045) 09-28 09:24:07.740: I/dalvikvm(20140): at java.lang.reflect.Method.invokeNative(Native Method) 09-28 09:24:07.740: I/dalvikvm(20140): at java.lang.reflect.Method.invoke(Method.java:511) 09-28 09:24:07.740: I/dalvikvm(20140): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 09-28 09:24:07.740: I/dalvikvm(20140): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 09-28 09:24:07.740: I/dalvikvm(20140): at dalvik.system.NativeStart.main(Native Method) 09-28 09:24:07.740: E/dalvikvm(20140): Out of memory: Heap Size=46115KB, Allocated=38582KB, Limit=65536KB 09-28 09:24:07.740: E/dalvikvm(20140): Extra info: Footprint=39907KB, Allowed Footprint=46115KB, Trimmed=892KB 09-28 09:24:07.740: E/Bitmap_JNI(20140): Create Bitmap Failed. 09-28 09:24:07.740: A/libc(20140): Fatal signal 11 (SIGSEGV) at 0x00000004 (code=1) 09-28 09:24:09.750: I/dalvikvm(20367): Turning on JNI app bug workarounds for target SDK version 10... 09-28 09:24:09.940: D/dalvikvm(20367): GC_CONCURRENT freed 864K, 21% free 3797K/4771K, paused 2ms+2ms thanks. [update] @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.showmoredetailslayout); actualCallTime = (TextView)findViewById(R.id.actualcalltime); doubleUp = (TextView)findViewById(R.id.doubleupcallid); needName = (TextView)findViewById(R.id.needname); needNameLabel = (TextView)findViewById(R.id.neednamelabel); getRotaDetails = (Button)findViewById(R.id.buttongetrotadetails); intent = this.getIntent(); String actualTimeIn = intent.getStringExtra("actTimeIn"); String actualTimeOut = intent.getStringExtra("actTimeOut"); String doubleUpValue = intent.getStringExtra("doubleUpValue"); String needNameWithCommas = intent.getStringExtra("needNameWithCommas"); callID = intent.getStringExtra("callID"); String[] needs = needNameWithCommas.split(","); actualCallTime.setText("This call was completed at " + actualTimeIn + " -" + actualTimeOut); if( ! doubleUpValue.equalsIgnoreCase("") || doubleUpValue.equalsIgnoreCase("]")){ doubleUp.setText("This call was not a double up "); }else{ doubleUp.setText("This call was a double up " + doubleUpValue); } needNameLabel.setText("Purpose of Call: "); for (int i = 0; i < needs.length; i++){ needName.append( needs[i] + "\n"); } getRotaDetails.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(ShowMoreDetails.this, GetRotaDetails.class); intent.putExtra("callIDExtra", callID); startActivity(intent); } }); } }

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• Please explain syntax rules and scope for "typedef"

  - by unknown google user

  What are the rules? OTOH the simple case seems to imply the new type is the last thing on a line. Like here Uchar is the new type. typedef unsigned char Uchar; But a function pointer is completely different. Here the new type is pFunc: typedef int (*pFunc) (int); I can't think of any other examples offhand but I have come across some very confusing usages. So are there rules or are people just suppose to know from experience that this is how it is done because they have seen it done this way before? ALSO: What is the scope of a typedef. Thanks to everyone.

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• Store address dynamic array in c

  - by user280642

  I'm trying to save the address of a dynamic array index. struct sstor *dlist; struct node *q; q->item = &(dlist->item[(dlist->sz)-1]); // Problem? This is my node struct node { char **item; struct node *next; struct node *prev; }; This is my array struct sstor { int sz; int maxsz; char item[][1024]; }; I'm still new to pointers. The line below gives the error: assignment from incompatible pointer type q->item = &(dlist->item[(dlist->sz)-1]);

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• Split string var

  - by lidermin

  Hi, I have a question: Let's say I have this string var: string strData = "1|2|3|4||a|b|c|d" Then, I make a Split: strNumbers[] = strData.Split("||"); //something like this, I know It's not this simple I need two separate parts, each one containing this: //strNumbers -> {"1","2","3","4"},{"a","b","c","d"} So that after that, I could do this: string[] strNumArray[] = strNumbers[0].Split('|'); //strNumArray -> '1', '2', '3', '4' And same with the other part (letters). Is it possible? to make this double split with the same character, but the first time the character is repeated twice?. Thanks. PD. I'm using C#.

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• C++'s unordered_map / hash_map / Google's dense_hash - how to input binary data (buf+len) and insert

  - by shlomif

  Hi all, I have two questions about Google's dense_hash_map, which can be used instead of the more standard unordered_map or hash_map: How do I use an arbitrary binary data memory segment as a key: I want a buffer+length pair, which may still contain some NUL (\0) characters. I can see how I use a NUL-terminated char * string , but that's not what I want. How do I implement an operation where I look if a key exists, and if not - insert it and if it does return the pointer to the existing key and let me know what actually happened. I'd appreciate it if anyone can shed any light on this subject. Regards, -- Shlomi Fish

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• Manage bad_alloc exception in C++ construtor

  - by Jimmy zhang

  I have Java experience and recently am doing some C++ coding. My question is that if I have class A, in which I have to instantiate class B and class C as two of the member variables of A. If in the constructor of A, should I assume that allocations of class B and C never fail, and handle the bad allocation exception in the destructor of A? If I don't make that assumption, meaning that I add some try catch block to catch bad_alloc of class B and class C, then if the allocation exception occurs, should I do clean up in the constructor of A? What are the recommended practices? If "new" generates a bad allocation, what value does the pointer carry?

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• How to raise an error, if the parsed number of a C++ stdlib stream is immediatly followed by a non whitespace character?

  - by Micha Wiedenmann

  In the following example, I didn't expect, that 1.2345foo would be parsed. Since I am reading data files, it is probably better to raise an error and notify the user. Is peek() the correct thing to do here? #include <iostream> #include <sstream> int main() { std::stringstream in("1.2345foo"); double x; in >> x; if (in) { std::cout << "good\n"; } else { std::cout << "bad\n"; } } Output good

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