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• Moving abroad - Relocation advice

  - by Tim Koekkoek

  Oracle offers graduates from different European countries the opportunity to start their career abroad. Some already have experience with living abroad as they have done an exchange semester or internship in another county, for others it is the first time they will move abroad. Rui started in October 2011 as a Business Development Consultant in Dublin and moved from Portugal to Dublin, Ireland to start his career. For those planning to leave their home country and who desire to work abroad, he will share some tips and tricks in this article. When you’re faced with an opportunity like this, there are lots of things that will come to your mind. Sometimes it can be either very exciting, or even stressful. 1. First of all, try to relax. If you are certain you are moving abroad, all you need to do is some research about the country where you’re going to live, get to know its culture (gastronomy, important dates and events, its economy and effective ways to keep you in touch with your family and friends – such as mobile companies and Internet services), and start to understand the best locations (with good access) you could/should live in are. Don’t forget that initially you can be limited by transport and therefore it is important to explore the ideal places for you. During this time, Oracle provides everything you’ll need (papers, documents, etc.) to cross borders. 2. When you arrive, you understand that you are in a new country, in a new place, where all things (or most) are unknown to you. Before you panic, try to see it as a new challenge where new opportunities will come. Sometimes, it’s not easy I know, but the very best a new place has to give to you, is the opportunity to understand a new culture, get to know other people, other ways of working, and grow both as a person and professionally. So, you have nothing to lose in this kind of experiment. 3. When you arrive at Oracle, there’s a fantastic team that will help you with settling in, HR, Payroll, Relocation, IT. In my case, Oracle helped me with the relocation, they supported me to arrange everything such as helping out with all the paperwork and finding a new apartment. As you can see they will do their best to help you to be successful! 4. Engage with your new co-workers. Going to a place where you don’t know anyone can be tough sometimes but see it as an opportunity to meet people from all over the world and share experiences. Embrace it. 5. Plan ahead, try to get the most information possible and use it. Oracle is a multinational enterprise that will allow you to get to know a new labour market and give you the flexibility you need to understand your view of employment and occupation, giving you the very best opportunities to join different teams and working areas, so that you can work where you fit best. Good luck! If you’re thinking about starting a career abroad, read the following article: http://www.overseasdigest.com/movingtips.htm it can be very useful to you. Interested in starting your career at Oracle like Rui has? Please have a look at https://campus.oracle.com for all of our latest vacancies.

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• Box2d Cocos2d circle crash on contact with ground

  - by Oliver Cooper

  this is my first question here so sorry if I do something wrong or this is too long. I have been reading this tutorial by Ray Wenderlich, I have modified it so it is flatter and gradually goes down hill. Basically I have a ball roll down a bumpy hill, but at the moment the ball only drops from about 100 pixels above. When ever the touch the app crashes (the app is a Mac Cocos2d Box2d app). The ball code is this: CGSize winSize = [CCDirector sharedDirector].winSize; self.oeva = [CCSprite spriteWithTexture:[[CCTextureCache sharedTextureCache] addImage:@"Ball.png"]rect:CGRectMake(0, 0, 64, 64)]; _oeva.position = CGPointMake(68, winSize.height/2); [self addChild:_oeva z:1]; b2BodyDef oevaBodyDef; oevaBodyDef.type = b2_dynamicBody; oevaBodyDef.position.Set(68/PTM_RATIO, (winSize.height/2)/PTM_RATIO); // oevaBodyDef.userData = _oeva; _oevaBody = world->CreateBody(&oevaBodyDef); b2BodyDef bodyDef; bodyDef.type = b2_dynamicBody; bodyDef.position.Set(60/PTM_RATIO, 400/PTM_RATIO); bodyDef.userData = _oeva; b2Body *body = world->CreateBody(&bodyDef); // Define another box shape for our dynamic body. b2CircleShape dynamicBox; dynamicBox.m_radius = 70/PTM_RATIO;//These are mid points for our 1m box // Define the dynamic body fixture. b2FixtureDef fixtureDef; fixtureDef.shape = &dynamicBox; fixtureDef.density = 1.0f; fixtureDef.friction = 0.3f; body->CreateFixture(&fixtureDef); That works fine. This is the terrain code, this also works fine: -(void)generateTerrainWithWorld: (b2World *) inputWorld: (int) hillSize;{ b2BodyDef bd; bd.position.Set(0, 0); body = inputWorld->CreateBody(&bd); b2PolygonShape shape; b2FixtureDef fixtureDef; currentSlope = 0; CGSize winSize = [CCDirector sharedDirector].winSize; float xf = 0; float yf = (arc4random() % 10)+winSize.height/3; int x = 200; for(int i = 0; i < maxHillPoints; ++i) { hillPoints[i] = CGPointMake(xf, yf); xf = xf+ (arc4random() % x/2)+x/2; yf = ((arc4random() % 30)+winSize.height/3)-currentSlope; currentSlope +=10; } int hSegments; for (int i=0; i<maxHillPoints-1; i++) { CGPoint p0 = hillPoints[i-1]; CGPoint p1 = hillPoints[i]; hSegments = floorf((p1.x-p0.x)/cosineSegmentWidth); float dx = (p1.x - p0.x) / hSegments; float da = M_PI / hSegments; float ymid = (p0.y + p1.y) / 2; float ampl = (p0.y - p1.y) / 2; CGPoint pt0, pt1; pt0 = p0; for (int j = 0; j < hSegments+1; ++j) { pt1.x = p0.x + j*dx; pt1.y = ymid + ampl * cosf(da*j); fullHillPoints[fullHillPointsCount++] = pt1; pt0 = pt1; } } b2Vec2 p1v, p2v; for (int i=0; i<fullHillPointsCount-1; i++) { p1v = b2Vec2(fullHillPoints[i].x/PTM_RATIO,fullHillPoints[i].y/PTM_RATIO); p2v = b2Vec2(fullHillPoints[i+1].x/PTM_RATIO,fullHillPoints[i+1].y/PTM_RATIO); shape.SetAsEdge(p1v, p2v); body->CreateFixture(&shape, 0); } } However when ever the two collide the app crashes. The crash error is: Thread 6 CVDisplayLink: Program received signal: "SIGABRT" The error occurs on line 96 of b2ContactSolver.cpp: b2Assert(kNormal > b2_epsilon); The error log is: Assertion failed: (kNormal 1.19209290e-7F), function b2ContactSolver, file /Users/coooli01/Documents/Xcode Projects/Cocos2d/Hill Slide/Hill Slide/libs/Box2D/Dynamics/Contacts/b2ContactSolver.cpp, line 96. Sorry if I rambled on for too long, i've been stuck on this for ages.

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• Doctrine Fatal Error - Unknown relation alias

  - by Sadiqur Rahman

  I am getting following error message: Doctrine_Table_Exception: Unknown relation alias shoesTable in /home/public_html/projects/giftshoes/system/database/doctrine/Doctrine/Relation/Parser.php on line 237 I am using doctrine 1.2.2 with Codeigniter My Code is below: (BaseShoes.php and Shoes.php is auto generated) ------------BaseShoes------------ <?php // Connection Component Binding Doctrine_Manager::getInstance()->bindComponent('Shoes', 'sadiqsof_giftshoes'); /** * BaseShoes * * This class has been auto-generated by the Doctrine ORM Framework * * @property integer $sku * @property string $name * @property string $keywords * @property string $description * @property string $manufacturer * @property float $sale_price * @property float $price * @property string $url * @property string $image * @property string $category * @property Doctrine_Collection $Viewes * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ abstract class BaseShoes extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('shoes'); $this->hasColumn('sku', 'integer', 4, array( 'type' => 'integer', 'fixed' => 0, 'unsigned' => false, 'primary' => true, 'autoincrement' => false, 'length' => '4', )); $this->hasColumn('name', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('keywords', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('description', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('manufacturer', 'string', 20, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '20', )); $this->hasColumn('sale_price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('url', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('image', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('category', 'string', 50, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '50', )); } public function setUp() { parent::setUp(); $this->hasMany('Viewes', array( 'local' => 'sku', 'foreign' => 'sku')); } } --------------ShoesTable-------- <?php class ShoesTable extends Doctrine_Table { function getAllShoes($from = 0, $total = 15) { $q = Doctrine_Query::create() ->from('Shoes') ->limit($total) ->offset($from); return $q->execute(array(), Doctrine::HYDRATE_ARRAY); } } ---------------Shoes Model----------------- <?php /** * Shoes * * This class has been auto-generated by the Doctrine ORM Framework * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ class Shoes extends BaseShoes { function __construct() { parent::__construct(); $this->shoesTable = Doctrine::getTable('Shoes'); } function getAllShoes() { return $this->shoesTable->getAllShoes(); } }

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• Allocate constant memory

  - by Vlad

  I'm trying to set my simulation params in constant memory but without luck (CUDA.NET). cudaMemcpyToSymbol function returns cudaErrorInvalidSymbol. The first parameter in cudaMemcpyToSymbol is string... Is it symbol name? actualy I don't understand how it could be resolved. Any help appreciated. //init, load .cubin float[] arr = new float[1]; arr[0] = 0.0f; int size = Marshal.SizeOf(arr[0]) * arr.Length; IntPtr ptr = Marshal.AllocHGlobal(size); Marshal.Copy(arr, 0, ptr, arr.Length); var error = CUDARuntime.cudaMemcpyToSymbol("param", ptr, 4, 0, cudaMemcpyKind.cudaMemcpyHostToDevice); my .cu file contain __constant__ float param;

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• Create a polynomial object from a number using change-class

  - by charlieb

  I have written a polynomial class along the lines described in SICP 2.5.3 (except using defclass). I would like to be able to seamlessly add and multiply polynomials and regular numbers but I can't make change-class accept a number. I tried to simplify the problem by changing class from an integer to a float: (change-class 4 'float) but that gave me the error: There is no applicable method for the generic function #<STANDARD-GENERIC-FUNCTION CHANGE-CLASS (7)> when called with arguments (4 #<BUILT-IN-CLASS FLOAT>). [Condition of type SIMPLE-ERROR] I get an error of the same form from (fyi): (change-class 4 'polynomial) I'm going to go ahead and implement a manual conversion but I would prefer to use the built-in clos facilities.

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• OpenGL - Frustum not culling polygons beyond far plane

  - by Pladnius Brooks

  I have implemented frustum culling and am checking the bounding box for its intersection with the frustum planes. I added the ability to pause frustum updates which lets me see if the frustum culling has been working correctly. When I turn around after I have paused it, nothing renders behind me and to the left and right side, they taper off as well just as you would expect. Beyond the clip distance (far plane), they still render and I am not sure whether it is a problem with my frustum updating or bounding box checking code or I am using the wrong matrix or what. As I put the distance in the projection matrix at 3000.0f, it still says that bounding boxes well past that are still in the frustum, which isn't the case. Here is where I create my modelview matrix: projectionMatrix = glm::perspective(newFOV, 4.0f / 3.0f, 0.1f, 3000.0f); viewMatrix = glm::mat4(1.0); viewMatrix = glm::scale(viewMatrix, glm::vec3(1.0, 1.0, -1.0)); viewMatrix = glm::rotate(viewMatrix, anglePitch, glm::vec3(1.0, 0.0, 0.0)); viewMatrix = glm::rotate(viewMatrix, angleYaw, glm::vec3(0.0, 1.0, 0.0)); viewMatrix = glm::translate(viewMatrix, glm::vec3(-x, -y, -z)); modelViewProjectiomMatrix = projectionMatrix * viewMatrix; The reason I scale it by -1 in the Z direction is because the levels were designed to be rendered with DirectX so I reverse the Z direction. Here is where I update my frustum: void CFrustum::calculateFrustum() { glm::mat4 mat = camera.getModelViewProjectionMatrix(); // Calculate the LEFT side m_Frustum[LEFT][A] = (mat[0][3]) + (mat[0][0]); m_Frustum[LEFT][B] = (mat[1][3]) + (mat[1][0]); m_Frustum[LEFT][C] = (mat[2][3]) + (mat[2][0]); m_Frustum[LEFT][D] = (mat[3][3]) + (mat[3][0]); // Calculate the RIGHT side m_Frustum[RIGHT][A] = (mat[0][3]) - (mat[0][0]); m_Frustum[RIGHT][B] = (mat[1][3]) - (mat[1][0]); m_Frustum[RIGHT][C] = (mat[2][3]) - (mat[2][0]); m_Frustum[RIGHT][D] = (mat[3][3]) - (mat[3][0]); // Calculate the TOP side m_Frustum[TOP][A] = (mat[0][3]) - (mat[0][1]); m_Frustum[TOP][B] = (mat[1][3]) - (mat[1][1]); m_Frustum[TOP][C] = (mat[2][3]) - (mat[2][1]); m_Frustum[TOP][D] = (mat[3][3]) - (mat[3][1]); // Calculate the BOTTOM side m_Frustum[BOTTOM][A] = (mat[0][3]) + (mat[0][1]); m_Frustum[BOTTOM][B] = (mat[1][3]) + (mat[1][1]); m_Frustum[BOTTOM][C] = (mat[2][3]) + (mat[2][1]); m_Frustum[BOTTOM][D] = (mat[3][3]) + (mat[3][1]); // Calculate the FRONT side m_Frustum[FRONT][A] = (mat[0][3]) + (mat[0][2]); m_Frustum[FRONT][B] = (mat[1][3]) + (mat[1][2]); m_Frustum[FRONT][C] = (mat[2][3]) + (mat[2][2]); m_Frustum[FRONT][D] = (mat[3][3]) + (mat[3][2]); // Calculate the BACK side m_Frustum[BACK][A] = (mat[0][3]) - (mat[0][2]); m_Frustum[BACK][B] = (mat[1][3]) - (mat[1][2]); m_Frustum[BACK][C] = (mat[2][3]) - (mat[2][2]); m_Frustum[BACK][D] = (mat[3][3]) - (mat[3][2]); // Normalize all the sides NormalizePlane(m_Frustum, LEFT); NormalizePlane(m_Frustum, RIGHT); NormalizePlane(m_Frustum, TOP); NormalizePlane(m_Frustum, BOTTOM); NormalizePlane(m_Frustum, FRONT); NormalizePlane(m_Frustum, BACK); } And finally, where I check the bounding box: bool CFrustum::BoxInFrustum( float x, float y, float z, float x2, float y2, float z2) { // Go through all of the corners of the box and check then again each plane // in the frustum. If all of them are behind one of the planes, then it most // like is not in the frustum. for(int i = 0; i < 6; i++ ) { if(m_Frustum[i][A] * x + m_Frustum[i][B] * y + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x + m_Frustum[i][B] * y + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; if(m_Frustum[i][A] * x2 + m_Frustum[i][B] * y2 + m_Frustum[i][C] * z2 + m_Frustum[i][D] > 0) continue; // If we get here, it isn't in the frustum return false; } // Return a true for the box being inside of the frustum return true; }

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• Trouble using opaque pointers in Objective C++

  - by morgancodes

  The answer to this quesion explains that opaque pointers are a good way to include C++ member variables in an Objective C++ header. I'm getting compile errors when trying to follow the example. Here's the relevant code from my header, with the corresponding compiler errors shown as comments: struct ADSR_opaque; // error: forward declaration of 'struct ADSR_opaque' @interface LoopyPulser : NSObject{ float _pulseRate; UInt32 tickInterval; UInt32 step; InMemoryAudioFile * audioFilePlayer; ADSR_opaque* env; // error: expected specifier-qualifier-list before 'ADSR_opaque' Pattern * pattern; float loopLengthRatio; float volume; } Is there something simple I'm doing wrong here?

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• C# Generic Arrays and math operations on it

  - by msedi

  Hello, I'm currently involved in a project where I have very large image volumes. This volumes have to processed very fast (adding, subtracting, thresholding, and so on). Additionally most of the volume are so large that they event don't fit into the memory of the system. For that reason I have created an abstract volume class (VoxelVolume) that host the volume and image data and overloads the operators so that it's possible to perform the regular mathematical operations on volumes. Thereby two more questions opened up which I will put into stackoverflow into two additional threads. Here is my first question. My volume is implemented in a way that it only can contain float array data, but most of the containing data is from an UInt16 image source. Only operations on the volume can create float array images. When I started implementing such a volume the class looked like following: public abstract class VoxelVolume<T> { ... } but then I realized that overloading the operators or return values would get more complicated. An example would be: public abstract class VoxelVolume<T> { ... public static VoxelVolume<T> Import<T>(param string[] files) { } } also adding two overloading operators would be more complicated: ... public static VoxelVolume<T> operator+(VoxelVolume<T> A, VoxelVolume<T> B) { ... } Let's assume I can overcome the problems described above, nevertheless I have different types of arrays that contain the image data. Since I have fixed my type in the volumes to float the is no problem and I can do an unsafe operation when adding the contents of two image volume arrays. I have read a few threads here and had a look around the web, but found no real good explanation of what to do when I want to add two arrays of different types in a fast way. Unfortunately every math operation on generics is not possible, since C# is not able to calculate the size of the underlying data type. Of course there might by a way around this problem by using C++/CLR, but currently everything I have done so far, runs in 32bit and 64bit without having to do a thing. Switching to C++/CLR seemed to me (pleased correct me if I'm wrong) that I'm bound to a certain platform (32bit) and I have to compile two assemblies when I let the application run on another platform (64bit). Is this true? So asked shortly: How is it possible to add two arrays of two different types in a fast way. Is it true that the developers of C# haven't thought about this. Switching to a different language (C# - C++) seems not to be an option. I realize that simply performing this operation float []A = new float[]{1,2,3}; byte []B = new byte[]{1,2,3}; float []C = A+B; is not possible and unnecessary although it would be nice if it would work. My solution I was trying was following: public static class ArrayExt { public static unsafe TResult[] Add<T1, T2, TResult>(T1 []A, T2 []B) { // Assume the length of both arrays is equal TResult[] result = new TResult[A.Length]; GCHandle h1 = GCHandle.Alloc (A, Pinned); GCHandle h2 = GCHandle.Alloc (B, Pinned); GCHandle hR = GCHandle.Alloc (C, Pinned); void *ptrA = h1.ToPointer(); void *ptrB = h2.ToPointer(); void *ptrR = hR.ToPointer(); for (int i=0; i<A.Length; i++) { *((TResult *)ptrR) = (TResult *)((T1)*ptrA + (T2)*ptrB)); } h1.Free(); h2.Free(); hR.Free(); return result; } } Please excuse if the code above is not quite correct, I wrote it without using an C# editor. Is such a solution a shown above thinkable? Please feel free to ask if I made a mistake or described some things incompletely. Thanks for your help Martin

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• Doctrine_Table_Exception: Unknown relation alias shoesTable in /home/sadiqsof/public_html/projects/g

  - by Sadiqur Rahman

  I am getting following error message: Doctrine_Table_Exception: Unknown relation alias shoesTable in /home/sadiqsof/public_html/projects/giftshoes/system/database/doctrine/Doctrine/Relation/Parser.php on line 237 My Code is below: ------------BaseShoe------------ <?php // Connection Component Binding Doctrine_Manager::getInstance()->bindComponent('Shoes', 'sadiqsof_giftshoes'); /** * BaseShoes * * This class has been auto-generated by the Doctrine ORM Framework * * @property integer $sku * @property string $name * @property string $keywords * @property string $description * @property string $manufacturer * @property float $sale_price * @property float $price * @property string $url * @property string $image * @property string $category * @property Doctrine_Collection $Viewes * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ abstract class BaseShoes extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('shoes'); $this->hasColumn('sku', 'integer', 4, array( 'type' => 'integer', 'fixed' => 0, 'unsigned' => false, 'primary' => true, 'autoincrement' => false, 'length' => '4', )); $this->hasColumn('name', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('keywords', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('description', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('manufacturer', 'string', 20, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '20', )); $this->hasColumn('sale_price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('url', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('image', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('category', 'string', 50, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '50', )); } public function setUp() { parent::setUp(); $this->hasMany('Viewes', array( 'local' => 'sku', 'foreign' => 'sku')); } } --------------ShoesTable-------- <?php class ShoesTable extends Doctrine_Table { function getAllShoes($from = 0, $total = 15) { $q = Doctrine_Query::create() ->from('Shoes') ->limit($total) ->offset($from); return $q->execute(array(), Doctrine::HYDRATE_ARRAY); } } ---------------Shoes Model----------------- <?php /** * Shoes * * This class has been auto-generated by the Doctrine ORM Framework * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ class Shoes extends BaseShoes { function __construct() { parent::__construct(); $this->shoesTable = Doctrine::getTable('Shoes'); } function getAllShoes() { return $this->shoesTable->getAllShoes(); } }

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• 2 columns 100% height. Can the problem ever be solved in html markup???!!

  - by denja

  I'm in despair trying to draw this simple thing. Two columns stretching 100% vertically. Is this ever possible? here there are two tries <html> <head> <title>Columns</title> </head> <body> <style type="text/css"> .wrapper {font-size:900px; width:1200px; margin:0 auto; } .col1 { width:600px; height:100%; float:left; background:#f00; } .col2 { width:600px; height:100%; float:left; background:#00f; } </style> <div class="wrapper"> <div class="col1"> C o l u m n 1 </div> <div class="col2"> C ol u m n 2 </div> </div> </body> </html> and <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"> <head> <title>2 Column CSS Demo - Equal Height Columns with Cross-Browser CSS</title> <style media="screen" type="text/css"> /* <!-- */ *{ margin:0; padding:0; } html { background-color: #ccc; height: 100%; } body { background-color: white; width: 600px; margin: 0 auto; height:100%; position: relative; border-left: 1px solid #888; border-right: 2px solid black; } #footer { clear:both; width:100%; height:0px;font-size:0px; } #container2 { clear:left; float:left; width:600px; overflow:hidden; background:#ffa7a7; } #container1 { float:left; width:600px; position:relative; right:200px; background:#fff689; } #col1 { float:left; width:400px; position:relative; left:200px; overflow:hidden; } #col2 { float:left; width:200px; position:relative; left:200px; overflow:hidden; } /* --> */ </style> </head> <body> <div id="container2"> <div id="container1"> <div id="col1"> aaaa a a a a a a a a a aa aa a a a a a a a a aa aa a a a a a a a a aa aa a a a a a a a aa a a a a aa aa a a a a a a a a aa aa a a a a a a a a aa aa a a a a aa a a a a aa aa a </div> <div id="col2"> fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn v </div> </div> </div> <div id="footer"> &nbsp; </div> </body>

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• Doctrine_Table_Exception: Unknown relation alias [closed]

  - by Sadiqur Rahman

  I am getting following error message: Doctrine_Table_Exception: Unknown relation alias shoesTable in /home/public_html/projects/giftshoes/system/database/doctrine/Doctrine/Relation/Parser.php on line 237 My Code is below: ------------BaseShoe------------ <?php // Connection Component Binding Doctrine_Manager::getInstance()->bindComponent('Shoes', 'sadiqsof_giftshoes'); /** * BaseShoes * * This class has been auto-generated by the Doctrine ORM Framework * * @property integer $sku * @property string $name * @property string $keywords * @property string $description * @property string $manufacturer * @property float $sale_price * @property float $price * @property string $url * @property string $image * @property string $category * @property Doctrine_Collection $Viewes * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ abstract class BaseShoes extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('shoes'); $this->hasColumn('sku', 'integer', 4, array( 'type' => 'integer', 'fixed' => 0, 'unsigned' => false, 'primary' => true, 'autoincrement' => false, 'length' => '4', )); $this->hasColumn('name', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('keywords', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('description', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('manufacturer', 'string', 20, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '20', )); $this->hasColumn('sale_price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('url', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('image', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('category', 'string', 50, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '50', )); } public function setUp() { parent::setUp(); $this->hasMany('Viewes', array( 'local' => 'sku', 'foreign' => 'sku')); } } --------------ShoesTable-------- <?php class ShoesTable extends Doctrine_Table { function getAllShoes($from = 0, $total = 15) { $q = Doctrine_Query::create() ->from('Shoes') ->limit($total) ->offset($from); return $q->execute(array(), Doctrine::HYDRATE_ARRAY); } } ---------------Shoes Model----------------- <?php /** * Shoes * * This class has been auto-generated by the Doctrine ORM Framework * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ class Shoes extends BaseShoes { function __construct() { parent::__construct(); $this->shoesTable = Doctrine::getTable('Shoes'); } function getAllShoes() { return $this->shoesTable->getAllShoes(); } }

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• [OpenGL] I'm having an issue to use GLshort for representing Vertex, and Normal.

  - by Xylopia

  As my project gets close to optimization stage, I notice that reducing Vertex Metadata could vastly improve the performance of 3D rendering. Eventually, I've dearly searched around and have found following advices from stackoverflow. Using GL_SHORT instead of GL_FLOAT in an OpenGL ES vertex array How do you represent a normal or texture coordinate using GLshorts? Advice on speeding up OpenGL ES 1.1 on the iPhone Simple experiments show that switching from "FLOAT" to "SHORT" for vertex and normal isn't tough, but what troubles me is when you're to scale back verticies to their original size (with glScalef), normals are multiplied by the reciprocal of the scale. Then how do you use "short" for both vertex and normal at the same time? I've been trying this and that for about a full day, but I could only go for "float vertex w/ byte normal" or "short vertex w/ float normal" so far. Your help would be truly appreciated.

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• improving conversions to binary and back in C#

  - by Saad Imran.

  I'm trying to write a general purpose socket server for a game I'm working on. I know I could very well use already built servers like SmartFox and Photon, but I wan't to go through the pain of creating one myself for learning purposes. I've come up with a BSON inspired protocol to convert the the basic data types, their arrays, and a special GSObject to binary and arrange them in a way so that it can be put back together into object form on the client end. At the core, the conversion methods utilize the .Net BitConverter class to convert the basic data types to binary. Anyways, the problem is performance, if I loop 50,000 times and convert my GSObject to binary each time it takes about 5500ms (the resulting byte[] is just 192 bytes per conversion). I think think this would be way too slow for an MMO that sends 5-10 position updates per second with a 1000 concurrent users. Yes, I know it's unlikely that a game will have a 1000 users on at the same time, but like I said earlier this is supposed to be a learning process for me, I want to go out of my way and build something that scales well and can handle at least a few thousand users. So yea, if anyone's aware of other conversion techniques or sees where I'm loosing performance I would appreciate the help. GSBitConverter.cs This is the main conversion class, it adds extension methods to main datatypes to convert to the binary format. It uses the BitConverter class to convert the base types. I've shown only the code to convert integer and integer arrays, but the rest of the method are pretty much replicas of those two, they just overload the type. public static class GSBitConverter { public static byte[] ToGSBinary(this short value) { return BitConverter.GetBytes(value); } public static byte[] ToGSBinary(this IEnumerable<short> value) { List<byte> bytes = new List<byte>(); short length = (short)value.Count(); bytes.AddRange(length.ToGSBinary()); for (int i = 0; i < length; i++) bytes.AddRange(value.ElementAt(i).ToGSBinary()); return bytes.ToArray(); } public static byte[] ToGSBinary(this bool value); public static byte[] ToGSBinary(this IEnumerable<bool> value); public static byte[] ToGSBinary(this IEnumerable<byte> value); public static byte[] ToGSBinary(this int value); public static byte[] ToGSBinary(this IEnumerable<int> value); public static byte[] ToGSBinary(this long value); public static byte[] ToGSBinary(this IEnumerable<long> value); public static byte[] ToGSBinary(this float value); public static byte[] ToGSBinary(this IEnumerable<float> value); public static byte[] ToGSBinary(this double value); public static byte[] ToGSBinary(this IEnumerable<double> value); public static byte[] ToGSBinary(this string value); public static byte[] ToGSBinary(this IEnumerable<string> value); public static string GetHexDump(this IEnumerable<byte> value); } Program.cs Here's the the object that I'm converting to binary in a loop. class Program { static void Main(string[] args) { GSObject obj = new GSObject(); obj.AttachShort("smallInt", 15); obj.AttachInt("medInt", 120700); obj.AttachLong("bigInt", 10900800700); obj.AttachDouble("doubleVal", Math.PI); obj.AttachStringArray("muppetNames", new string[] { "Kermit", "Fozzy", "Piggy", "Animal", "Gonzo" }); GSObject apple = new GSObject(); apple.AttachString("name", "Apple"); apple.AttachString("color", "red"); apple.AttachBool("inStock", true); apple.AttachFloat("price", (float)1.5); GSObject lemon = new GSObject(); apple.AttachString("name", "Lemon"); apple.AttachString("color", "yellow"); apple.AttachBool("inStock", false); apple.AttachFloat("price", (float)0.8); GSObject apricoat = new GSObject(); apple.AttachString("name", "Apricoat"); apple.AttachString("color", "orange"); apple.AttachBool("inStock", true); apple.AttachFloat("price", (float)1.9); GSObject kiwi = new GSObject(); apple.AttachString("name", "Kiwi"); apple.AttachString("color", "green"); apple.AttachBool("inStock", true); apple.AttachFloat("price", (float)2.3); GSArray fruits = new GSArray(); fruits.AddGSObject(apple); fruits.AddGSObject(lemon); fruits.AddGSObject(apricoat); fruits.AddGSObject(kiwi); obj.AttachGSArray("fruits", fruits); Stopwatch w1 = Stopwatch.StartNew(); for (int i = 0; i < 50000; i++) { byte[] b = obj.ToGSBinary(); } w1.Stop(); Console.WriteLine(BitConverter.IsLittleEndian ? "Little Endian" : "Big Endian"); Console.WriteLine(w1.ElapsedMilliseconds + "ms"); } Here's the code for some of my other classes that are used in the code above. Most of it is repetitive. GSObject GSArray GSWrappedObject

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• MYSQL: Error: Cannot add or update a child row: a foreign key constraint fails

  - by DalivDali

  Hi all, Using MySQL on Windows OS, and am getting an error upon attempting to create a foreign key between two tables: CREATE TABLE tf_traffic_stats ( domain_name char(100) NOT NULL, session_count int(11) NULL, search_count int(11) NULL, click_count int(11) NULL, revenue float NULL, rpm float NULL, cpc float NULL, traffic_date date NOT NULL DEFAULT '0000-00-00', PRIMARY KEY(domain_name,traffic_date)) and CREATE TABLE td_domain_name ( domain_id int(10) UNSIGNED AUTO_INCREMENT NOT NULL, domain_name char(100) NOT NULL, update_date date NOT NULL, PRIMARY KEY(domain_id)) The following statement gives me the error present in the subject line (cannot add or update a child row: a foreign key constraint fails): ALTER TABLE td_domain_name ADD CONSTRAINT FK_domain_name FOREIGN KEY(domain_name) REFERENCES tf_traffic_stats(domain_name) ON DELETE RESTRICT ON UPDATE RESTRICT Can someone point me in the right direction of what may be causing the error. I also have a foreign key referencing td_domain_name.domain_id, but I don't think this should be interfering... Appreciate it!

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• pointer and reference question (linked lists)

  - by sil3nt

  Hi there, I have the following code struct Node { int accnumber; float balance; Node *next; }; Node *A, *B; int main() { A = NULL; B = NULL; AddNode(A, 123, 99.87); AddNode(B, 789, 52.64); etc… } void AddNode(Node * & listpointer, int a, float b) { // add a new node to the FRONT of the list Node *temp; temp = new Node; temp->accnumber = a; temp->balance = b; temp->next = listpointer; listpointer = temp; } in this here void AddNode(Node * & listpointer, int a, float b) { what does *& listpointer mean exactly.

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• Manipulating and comparing floating points in java

  - by Praneeth

  In Java the floating point arithmetic is not represented precisely. For example following snippet of code float a = 1.2; float b= 3.0; float c = a * b; if(c == 3.6){ System.out.println("c is 3.6"); } else { System.out.println("c is not 3.6"); } actually prints "c is not 3.6". I'm not interested in precision beyond 3 decimals (#.###). How can I deal with this problem to multiply floats and compare them reliably? Thanks much

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• Compare rows between 2 tables

  - by arthur

  I am new to SQL and I need to build a database for a grocery store(not real, just a course assignment) i have two fields from two different tables - supplied price - the price that the store buys from the supplier and price that is given to the customers How can I make a constraint that insures that supplied price is lower then the price that is given to the customers? The relevant tables that I have are: CREATE TABLE Supplied_Products( [Supplier ID] Int NOT NULL Foreign Key References Suppliers, [Product ID] Int NOT NULL Foreign Key References Products, Price Float NOT NULL, CHECK (Price0), Constraint PK_Supplied_Products PRIMARY KEY([Supplier ID] ,[Product ID]) ) CREATE TABLE Products( [Product-ID] Int NOT NULL PRIMARY KEY, [Product Name] Varchar(20) NOT NULL, Price Float NOT NULL, [Category-Name] Varchar(20) NOT NULL Foreign Key References Categories, [Weight] Float NOT NULL, [Is Refrigirated] Varchar(1) DEFAULT 'N' CHECK ([Is Refrigirated] in('Y','N')),/* Is Refrigirated can be only Y-yes or N-no*/ CHECK (Price 0) )

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• Mapping an Array to a Single Row

  - by João Bragança

  I have the following classes: public class InventoryItem { private Usage[] usages = new Usage[12]; virtual public Usage[] Usages { get { return usages; }} virtual public string Name{get;set;} } public class Usage { virtual public double Quantity{get;set;} virtual public string SomethingElse{get;set;} } I know that Usages.Length will always be 12. I think it would be best to store it in the DB like so: Name nvarchar(64), Usage_Quantity_0 float, Usage_SomethingElse_0 nvarchar(16), Usage_Quantity_1 float, Usage_SomethingElse_1 nvarchar(16), ... Usage_Quantity_11 float, Usage_SomethingElse_11 nvarchar(16), How can I get this done?

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• Bind texture with pinned mapped memory in CUDA

  - by sjchoi

  I was trying to bind a host memory that was mapped for zero-copy to a texture, but it looks like it isn't possible. Here is a code sample: float* a; float* d_a; cudaSetDeviceFlags(cudaDeviceMapHost); cudaHostAlloc( (void **)&a, bytes, cudaHostAllocMapped); cudaHostGetDevicePointer((void **)&d_a, (void *)a, 0); texture<float, 2, cudaReadModeElementType> tex; cudaBindTexture2D( 0, &tex, d_a, &channelDesc, width, height, pitch); Is it recommended that you used pinned memory and just copy it over to device memory that is bind to texture?

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• How do you make an in-place construction of a struct casted to array compile in Visual C++ 2008?

  - by Irwin1138

  I'm working with quite a big codebase which compiles fine in linux but vc++ 2008 spits errors. The problem code goes like this: Declaration: typedef float vec_t; typedef vec_t vec2_t[2]; The codebase is littered with in-place construction like this one: (vec2_t){0, divs} Or more complex: (vec2_t){ 1/(float)Vid_GetScreenW(), 1/(float)Vid_GetScreenH()} As far as I know, this code constructs a struct, then converts it to an array and passes the address to the function. I personally never used in-place construction like this so I have no clue how to make this one work. I don't maintain the linux build, only the windows one. And I can't get it to compile. Is there some switch, some macro to make vc++ compile it? Maybe there is a similar nifty way to construct those arrays and pass them to the functions in-place that compiles just fine in vc++?

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• div on top of div with Google Maps API

  - by JHM_67

  How do I float a div "menu" on top of my Google Maps API "map" div. And maybe possibly add a transparency of 50% on the menu div. Can this be done? #map {width: 835px; height 540px; float: left;} #menu {width: 145px; float: right; padding-top: 10px;} <div id="map"></div> <div id="menu"></div>

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• Doctrine_Table_Exception: Unknown relation alias shoesTable [closed]

  - by Sadiqur Rahman

  I am getting following error message: Doctrine_Table_Exception: Unknown relation alias shoesTable in /home/public_html/projects/giftshoes/system/database/doctrine/Doctrine/Relation/Parser.php on line 237 My Code is below: ------------BaseShoe------------ <?php // Connection Component Binding Doctrine_Manager::getInstance()->bindComponent('Shoes', 'sadiqsof_giftshoes'); /** * BaseShoes * * This class has been auto-generated by the Doctrine ORM Framework * * @property integer $sku * @property string $name * @property string $keywords * @property string $description * @property string $manufacturer * @property float $sale_price * @property float $price * @property string $url * @property string $image * @property string $category * @property Doctrine_Collection $Viewes * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ abstract class BaseShoes extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('shoes'); $this->hasColumn('sku', 'integer', 4, array( 'type' => 'integer', 'fixed' => 0, 'unsigned' => false, 'primary' => true, 'autoincrement' => false, 'length' => '4', )); $this->hasColumn('name', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('keywords', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('description', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('manufacturer', 'string', 20, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '20', )); $this->hasColumn('sale_price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('url', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('image', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('category', 'string', 50, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '50', )); } public function setUp() { parent::setUp(); $this->hasMany('Viewes', array( 'local' => 'sku', 'foreign' => 'sku')); } } --------------ShoesTable-------- <?php class ShoesTable extends Doctrine_Table { function getAllShoes($from = 0, $total = 15) { $q = Doctrine_Query::create() ->from('Shoes') ->limit($total) ->offset($from); return $q->execute(array(), Doctrine::HYDRATE_ARRAY); } } ---------------Shoes Model----------------- <?php /** * Shoes * * This class has been auto-generated by the Doctrine ORM Framework * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ class Shoes extends BaseShoes { function __construct() { parent::__construct(); $this->shoesTable = Doctrine::getTable('Shoes'); } function getAllShoes() { return $this->shoesTable->getAllShoes(); } }

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• Java3d shape with Antlr

  - by Eldeus

  Well how to evaluate a very simple antlr grammar that does only this. Box(1,2,4) Cylinder(1,2) and builds java3d shapes, (given I have already built a canvas for java3d and have the code for creating each element in java, protected static BranchGroup addBox1(Float a, Float b, Float C){ // create branch for display TransformGroup bodyTransform = new TransformGroup(); BranchGroup bg = new BranchGroup(); bg.setCapability(BranchGroup.ALLOW_DETACH); bg.setUserData(shapeId); // set transformation bodyTransform = setTransformShape(0,0,0,0,0,0,0); // create box Box tmpBox = new Box(a,b,c, Primitive.GENERATE_NORMALS | Primitive.GENERATE_TEXTURE_COORDS,setAppearance(color)); getCoords(tmpBox); bodyTransform.addChild(tmpBox); trFormList.add(bodyTransform); shapeId++; //add box to branch bg.addChild(bodyTransform); return bg; } ) thanks

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• Why are there so many floats in the Android API?

  - by Brian

  The default floating point type in Java is the double. If you hard code a constant like 2.5 into your program, Java makes it a double automatically. When you do an operation on floats or ints that could potentially benefit from more precision, the type is 'promoted' to a double. But in the Android API, everything seems to be a float from sound volumes to rectangle coordinates. There's a structure called RectF used in most drawing; the F is for float. It's really a pain for programmers who are casting promoted doubles back to (float) pretty often. Don't we all agree that Java code is messy and verbose enough as it is? Usually math coprocessors and accelerators prefer double in Java because it corresponds to one of the internal types. Is there something about Android's Dalvik VM that prefers floats for some reason? Or are all the floats just a result of perversion in API design?

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• Function for averages of tuples in a dictionary

  - by Billy Mann

  I have a string, dictionary in the form: ('the head', {'exploded': (3.5, 1.0), 'the': (5.0, 1.0), "puppy's": (9.0, 1.0), 'head': (6.0, 1.0)}) Each parentheses is a tuple which corresponds to (score, standard deviation). I'm taking the average of just the first integer in each tuple. I've tried this: def score(string, d): for word in d: (score, std) = d[word] d[word]=float(score),float(std) if word in string: word = string.lower() number = len(string) return sum([v[0] for v in d.values()]) / float(len(d)) if len(string) == 0: return 0 When I run: print score('the head', {'exploded': (3.5, 1.0), 'the': (5.0, 1.0), "puppy's": (9.0, 1.0), 'head': (6.0, 1.0)}) I should get 5.5 but instead I'm getting 5.875. Can't figure out what in my function is not allowing me to get the correct answer.

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