Search Results

Search found 6682 results on 268 pages for 'edge cases'.

Page 170/268 | < Previous Page | 166 167 168 169 170 171 172 173 174 175 176 177  | Next Page >

• Generate a matrix of all possible outcomes for throwing n dice (ignoring order)

  - by Brani

  In cases where order does matter, it's rather easy to generate the matrix of all possible outcomes. One way for doing this is using expand.grid as shown here. What if it doesn't? If I'm right, the number of possible combinations is (S+N-1)!/S!(N-1)!, where S is the number of dice, each with N sides numbered 1 through N. (It is different from the well known combinations formula because it is possible for the same number to appear on more than one dice). For example, when throwing four six-sided dice, N=6 and S=4, so the number of possible combinations is (4+6-1)!/4!(6-1)! = 9!/4!x5! = 126. How can I generate a matrix of these 126 possible outcomes? Thank you.

  Read the article

• After changing position labels of items are gone

  - by unresolved_external

  I have FrameLayout, which has buttondeclared like this: <Button android:id="@+id/button_face_popup_more" android:layout_alignParentRight="true" android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="10dp" android:text="@string/more" android:textColor="#1c1c1c" android:textSize="15dp" android:singleLine="true" android:ellipsize="end" /> When I add it to the ViewGroup in the first time, everything is great. But when I need to replace it according to screen size: if ( screenHeight < h + popupRect.top ) { removeView(mPopupView); //((Button) mPopupView.findViewById(R.id.button_face_popup_more)).setText(R.string.more); addView(mPopupView, popupRect.left, screenHeight - h, popupRect.width()); } I got button with no label. What can be the issue? Almost forgot when I check in debug mText filed of that button in both cases, when it is displayeed and when it is not, it equals "".

  Read the article

• Android Graphics Memory Limits

  - by Gordon

  I am creating an android game using opengl and a cocos2d port (http://code.google.com/p/cocos2d-android-1). I am targeting a wide range of devices and want to ensure that it performs well. I only test on a nexus one and am hoping to get some input from people with experience on slower devices. Currently the game uses two 1024x1024 textures as well as two 256x256 textures. Is this within the limits of most devices? Anyone have any rule of thumb or experience with graphics memory limits in these cases? If gfx memory is exceeded does it page to normal memory?

  Read the article

• Check if edit is valid for database ms-access

  - by twodayslate

  I want to be able to check if I can edit a cell in a database with a new object Example method declaration: something.isValid(Object newObject, row, column); Example cases: If the editing cell stores an Number and I give it a String, the method will return false... If the editing cell has to be different than every other entry and the new object is the same as something else, the method will also return false.... My main goal... I want to check a whole row, and if everything is valid, I will edit the whole row. Right now, the only way I can find out if I can actually edit something is by actually editing it and seeing if I get an error.

  Read the article

• .NET 3.5 SP1 Code from Network - "The system cannot find the file specified."

  - by DaMoose

  This issue has nothing to do with whether the assemblies have been signed or caspol has been run for the shared network folder. Apparently, the location of the files is the issue, but I cannot find what the real problem is. I have one executable that references 5 dll's. I can run the app from a local drive without any problem. When I run the app from a network share, I get an error stating that "Could not load file or assembly 'homer, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified." If all the files are in the same folder, what is the error really telling me? I should note also that the framework used is 3.5 SP1, which does not require changing code access policy. I had tried that anyhow, and I received the same error in both cases. Thanks, DaMoose

  Read the article

• How to enforce lazy loading of entities on certain conditions

  - by Samuel

  We have an JPA @Entity class (say User) which has a @ManyToOne reference (say Address) loaded using the EAGER option which in turn loads it's own @ManyToOne fields (say Country) in a EAGER fashion. We use the EntityQuery interface to count the list of User's based on a search criteria, during such a load all the @ManyToOne fields which have been marked as EAGER get loaded. But in order to perform a EntityQuery.resultCount(), I actually don't need to load the @ManyToOne fields. Is there a way to prevent loading of the EAGER fields in such cases so that we can avoid the unnecessary joins?

  Read the article

• Is it a good idea to define a variable in a local block for a case of a switch statement?

  - by Paperflyer

  I have a rather long switch-case statement. Some of the cases are really short and trivial. A few are longer and need some variables that are never used anywhere else, like this: switch (action) { case kSimpleAction: // Do something simple break; case kComplexAction: { int specialVariable = 5; // Do something complex with specialVariable } break; } The alternative would be to declare that variable before going into the switch like this: int specialVariable = 5; switch (action) { case kSimpleAction: // Do something simple break; case kComplexAction: // Do something complex with specialVariable break; } This can get rather confusing since it is not clear to which case the variable belongs and it uses some unnecessary memory. However, I have never seen this usage anywhere else. Do you think it is a good idea to declare variables locally in a block for a single case?

  Read the article

• Client Profile Application prerequisites

  - by Carlo

  One last question about Client Profile installation. I downloaded the Microsoft .NET Framework Client Profile Online Installer because we want to put it in the installation CD because our end user might not have either .net framework 3.5 or internet. So we want to be able to handle both cases. In the prerequisites I'm able to select the location of where the file will be, but I don't know where it should be. I want to be able to somehow put the path of the cd, something like d:\ProductName\Prerequisites\DotNetFx35ClientSetup.exe so it can get it and install it from there. Does anyone have an idea of how this can be achieved? Thank you. Here's the prerequisites window:

  Read the article

• Generate (in R) a matrix of all possible outcomes for throwing n dice (ignoring order)

  - by Brani

  In cases where order does matter, it's rather easy to generate the matrix of all possible outcomes. One way for doing this is using expand.grid as shown here. What if it doesn't? If I'm right, the number of possible combinations is (S+N-1)!/S!(N-1)!, where S is the number of dice, each with N sides numbered 1 through N. (It is different from the well known combinations formula because it is possible for the same number to appear on more than one dice). For example, when throwing four six-sided dice, N=6 and S=4, so the number of possible combinations is (4+6-1)!/4!(6-1)! = 9!/4!x5! = 126. How can I generate a matrix of these 126 possible outcomes? Thank you.

  Read the article

• CAn unused exception variable when catching all exceptions

  - by b0x0rz

  what is a best practice in cases such as this one: try { // do something } catch (SpecificException ex) { Response.Redirect("~/InformUserAboutAn/InternalException/"); } the warning i get is that ex is never used. however all i need here is to inform the user, so i don't have a need for it. do i just do: try { // do something } catch { Response.Redirect("~/InformUserAboutAn/InternalException/"); } somehow i don't like that, seems strange!!? any tips? best practices? what would be the way to handle this. thnx

  Read the article

• Solr match all aka *:* does not work

  - by Karussell

  Don't know what I did wrong. I have two indices with identical documents in it. The local index was replicated from a master which responds correctly, so the same solrconfig.xml and schema.xml file. But if I query the index on my local machine with *:* I get 0 docs. (other queries on my local machine are working correct) I tried jetty and tomcat for the local index. no success. The *:* behaviour is crucial for me, because some test cases are failing now. Do you have an idea what could be wrong?

  Read the article

• Positioning objects in views during re-orientation in iPad

  - by Arni

  iPad Gurus: Apple wants us to support all orientations. I take that to mean that a particular layout should either rotate so that all objects are positioned relatively the same OR, if that doesn't look good, then they ought to be repositioned, OR two views ought to be designed and built. If I rely on the built-in rotation mechanism, the objects either get resized or they straddle the edge of the page in one orientation or the other, or they disappear from view altogether. I can't seem to find the right settings to get the objects to align clearly so they are seen in each orientation. Repositioning leads to a lot of if statements in the View Controller. So I don't think Apple had that in mind. I tried replacing views and even view controllers in "willRotateToInterfaceOrientation" method, but that either causes crashes or the portrait views end up in landscape unexpectedly and vv. Moreover, two view controllers means double the coding for the same view. There must be proper way to handle orientation changes, but I have searched the internet and documentation and sample code in vain for something that works. How is this done properly? Thanks!

  Read the article

• Django template context not working with imported class

  - by Andy Hume

  I'm using Django's templating on appengine, and am having a problem whereby a class I'm importing from another package is not correctly being made available to the template context. Broadly speaking, this is the code. The prop1 is not available in the template in the first example below, but is in the second. MyClass is identical in both cases. This does not work: from module import MyClass context = MyClass() self.response.out.write(template.render(path, context)) This does: class MyClass(object): def __init__(self): self.prop1 = "prop1" context = MyClass() self.response.out.write(template.render(path, context)) If I log the context in the above code I get: <module.MyClass object at 0x107b1e450> when it's imported, and: <__main__.MyClass object at 0x103759390> when it's defined in the same file. Any clues as to what might cause this kind of behaviour?

  Read the article

• Java: JGraphT: Iterate through nodes

  - by Rosarch

  I'm trying to iterate through all nodes, so I can print them out for graphviz. What is the best way to do that using the JGraphT library? public static void main(String[] args) { UndirectedGraph<String, DefaultEdge> g = new SimpleWeightedGraph<String, DefaultEdge>(DefaultEdge.class); String odp = "ODP"; String cck = "CCK"; String mfe = "MFE"; g.addVertex(odp); g.addVertex(cck); g.addVertex(mfe); g.addEdge(odp, cck); g.addEdge(odp, mfe); } Also, how do I add edge weights? Edit: This seems to work pretty well. But is there a better way? Set<DefaultEdge> edges = g.edgeSet(); for (DefaultEdge e : edges) { gv.addln(String.format("\"%s\" -> \"%s\"", g.getEdgeSource(e), g.getEdgeTarget(e))); }

  Read the article

• asp:QueryStringParameter and empty query string parameter

  - by abatishchev

  I haveasp:GridView displaying client requests using asp:SqlDataSource. I want to limit displayed information by client: View.aspx has to display everything, View.aspx?client=1 has to display only requests from client ID #1. So I'm using <asp:QueryStringParameter Name="client" QueryStringField="client" /> for query "EXEC getRequests @client". Everything works properly when some client is specified. But don't - if not. I tested my SP using SSMS - it works properly in both cases - when parameter is specified and when it isn't (NULL passed explicitly). What have I do?

  Read the article

• What is a good way of coding a file processing program, which accepts multisource data in Java

  - by jjepsuomi

  I'm making a data prosessing system, which currently is using csv-data as input and output form. In the future I might want to add support for example database-, xml-, etc. typed input and output forms. How should I desing my program so that it would be easy to add support for new type of data sources? Should simply make for example an abstract data class (which would contain the basic file prosessing methods) and then inherit this class for database, xml, etc. cases? Hope my question is clear =) In other words my question is: "How to desing a file prosessing system, which can be easily updated to accept input data from different sources (database, XML, Excel, etc.)".

  Read the article

• Undefined behaviour with non-virtual destructors - is it a real-world issue?

  - by Roddy

  Consider the following code: class A { public: A() {} ~A() {} }; class B: public A { B() {} ~B() {} }; A* b = new B; delete b; // undefined behaviour My understanding is that the C++ standard says that deleting b is undefined behaviour - ie, anything could happen. But, in the real world, my experience is that ~A() is always invoked, and the memory is correctly freed. if B introduces any class members with their own destructors, they won't get invoked, but I'm only interested in the simple kind of case above, where inheritance is used maybe to fix a bug in one class method for which source code is unavailable. Obviously this isn't going to be what you want in non-trivial cases, but it is at least consistent. Are you aware of any C++ implementation where the above does NOT happen, for the code shown?

  Read the article

• Is it good practice to initialize array in C/C++?

  - by sand

  I recently encountered a case where I need to compare two files (golden and expected) for verification of test results and even though the data written to both the files were same, the files does not match. On further investigation, I found that there is a structure which contains some integers and a char array of 64 bytes, and not all the bytes of char array were getting used in most of the cases and unused fields from the array contain random data and that was causing the mismatch. This brought me ask the question whether it is good practice to initialize the array in C/C++ as well, as it is done in Java?

  Read the article

• Are MongoDB and CouchDB perfect substitutes?

  - by raoulsson

  I haven't got my hands dirty yet with neither CouchDB nor MongoDB but I would like to do so soon... I also have read a bit about both systems and it looks to me like they cover the same cases... Or am I missing a key distinguishing feature? I would like to use a document based storage instead of a traditional RDBMS in my next project. I also need the datastore to handle large binary objects (images and videos) automatically replicate itself to physically separate nodes rendering the need of an additional RDBMS superfluous Are both equally well suited for these requirements? Thanks!

  Read the article

• Listing C/C++ functions (Code analysis in Unix)

  - by Jond

  Whether we're maintaining unfamiliar code or checking out the implementation details of an Apache module it can help if we can quickly traverse the code and build up an overview of what we're looking at. Grep serves most of my daily needs but there are some cases where it just wont do. Here's a common example of how it can help. To find the definition of a PHP function I'm interested in I can type this at the command line: grep -r "function myfunc" . This could be adapted very quickly to C or C++ if we know the return type, but things become more complicated if, say, I want to list every method that my class provides: grep "function " ./src/mine.class.php Since there's no single keyword that denotes a function or method in C++ and because it's generally more complex syntax, I think I'd need some kind of static code analysis tool, smart use of the C Preprocessor or blind faith the coder followed strict code guidelines (# of whitespace, position of curlies etc) to get these sorts of results. What would you recommend? p.s. be nice, this is my first post ;-) :p

  Read the article

• flex positioning a button within a panel

  - by pfunc

  All I'm trying to do is place a button inside of a panel, rotate that button (so it is vertical) and place it on the edge of the panel. I can;t seem to do this correctly. Here is my code: <mx:Panel id="weekList" width="260" height="100%" x="-500" title="Weeks" > <mx:List id="weekButtonList" width="260" borderVisible="false" contentBackgroundAlpha="0" dataProvider="{_data.mappoints.week.@number}" itemClick="onWeekClick(event);" > <mx:itemRenderer> <mx:Component> <mx:Button buttonMode="true" right="20" width="260" height="50" label="Week {data}" /> </mx:Component> </mx:itemRenderer> </mx:List> <mx:HBox id="closeButtonHolder" rotation="90" width="100" > <mx:Button label="OPEN" click="weekListToggle()" /> </mx:HBox> </mx:Panel> If you look at the part of the script you will see I am trying to rotate it and move it to the left. I am just trying to move it somewhere, and nothing is working. Also, the text seems to dissapear when I rotate it on a 90% axis. Anyone know what I can do for this?

  Read the article

• Function return type style

  - by JB

  I'm learning c++0x, at least the parts supported by the Visual C++ Express 2010 Beta. This is a question about style rather than how it works. Perhaps it's too early for style and good practice to have evolved yet for a standard that isn't even released yet... In c++0x you can define the return type of a method using - type at the end of the function instead of putting the type at the start. I believe this change in syntax is required due to lambdas and some use cases of the new decltype keyword, but you can use it anywhere as far as I know. // Old style int add1(int a, int b) { return a + b; } // New style return type auto add2(int a, int b) -> int { return a + b; } My question really then, is given that some functions will need to be defined in the new way is it considered good style to define all functions in this way for consistency? Or should I stick to only using it when necessary?

  Read the article

• When are C++ macros beneficial?

  - by Motti

  The C preprocessor is justifiably feared and shunned by the C++ community. In-lined functions, consts and templates are usually a safer and superior alternative to a #define. The following macro: #define SUCCEEDED(hr) ((HRESULT)(hr) >= 0) is in no way superior to the type safe: inline bool succeeded(int hr) { return hr >= 0; } But macros do have their place, please list the uses you find for macros that you can't do without the preprocessor. Please put each use-cases in a seperate answer so it can be voted up and if you know of how to achieve one of the answers without the preprosessor point out how in that answer's comments.

  Read the article

• How would I initialize these two lists so that modifying one doesn't modify the other?

  - by Brandon

  I'm aware of why this is happening, but is there any way to do this without having to implement ICloneable or a Copy() method? Preferably .net 2.0, but 3.5 is fine if it is necessary. Essentially I'm trying to implement an undo method. In most cases I can just perform the reverse action in the Undo(), but for others that is not possible. So I want to keep two lists. One for the list of items that I will be modifying, and one for the original, unmodified list of items. This way if I need to do an undo, I just delete the modified items and replace them with the originals. Most of the ways I've tried to assign the _originalItems variable doesn't work, so what would I need to do? public MyClass(List<SelectedItems> selectedItems) { _selectedItems = new List<SelectedItems>(selectedItems); _originalItems = ?? }

  Read the article

• How can I notify an application of a programmatically set scrollbar value?

  - by Frerich Raabe

  My code involves standard Scroll Bar control and it happens that I need to change its value programmatically in some cases. I do this using SetScrollInfo function, as in this example: void setScrollBarValue( HWND scrollBar, int value ) { SCROLLINFO si = { sizeof( SCROLLINFO ); } si.fMask = SIF_POS; si.nPos = value; ::SetScrollInfo( scrollBar, SB_CTL, &si, true /* redraw */ ); } This appears to work fine (the thumb of the scrollbar moves around) but it fails to notify the rest of the application of the new scrollbar value. For instance, an edit control which uses the scroll bar (much like in the Windows notepad application) fails to scroll around because it doesn't get notified about the new scrollbar value. In case it matters: the scrollbar I'm modifying is not in the same process as the above setScrollBarValue function. Does anybody know how to achieve this?

  Read the article

< Previous Page | 166 167 168 169 170 171 172 173 174 175 176 177  | Next Page >