function composition - Page 634

Wrong image dimensions when it's dynamically loaded on a page the 1st time

- by Nikita Barsukov

I have the following piece of Javascript code on my web-page var central_image = document.createElement("img") central_image.setAttribute("src", imgs[curr_image_no - 1]); central_image.setAttribute("name", "jpeg"); document.getElementById("photo").appendChild(central_image); central_image.onload = getDimensions(); //function that alerts image dimensions Now, when the central_image is loaded for the 1st time in Firefox, its height always equals to 0. In IE its dimensions are 28 x 30 pixels. When I reload image, its dimensions are OK in both browsers. I guess the problem is that function getDimensions() starts before image was loaded completely. How to change that?

Read the article

GLKit Memory Leak copywithZone

- by TommyT39

Running the instruments utility against the game I'm writing shows a bunch of memory leaks related to copy with Zone when I cycle through an array and draw some simple cube objects. Im not sure the best way to track this down as I'm new to OpenGL programming. My program is using ARC and is set to build for IOS 5. I am initializing GLKit to use OPenGl 2.0 and using the BafeEffect so I don't have to write my own shaders etc.. This shouldn't be rocket science. Im guessing that I must be not releasing something within the draw function. Below is the code to my draw function. Could you guys take a look and see if anything stands out as the problem? One other thing to note is that I'm using 15 different textures, the cubes can be 1 of 15 different ones. I have a property set on the cube class for the texture and I set it as I create the cube in there array. But I do load all 15 when my programs view did load starts.They are small .jps files that are less than 75k each and each cube uses the same texture all the way around so shouldn't be too big of an issue. Here is the code to my draw function: - (void)draw { GLKMatrix4 xRotationMatrix = GLKMatrix4MakeXRotation(rotation.x); GLKMatrix4 yRotationMatrix = GLKMatrix4MakeYRotation(rotation.y); GLKMatrix4 zRotationMatrix = GLKMatrix4MakeZRotation(rotation.z); GLKMatrix4 scaleMatrix = GLKMatrix4MakeScale(scale.x, scale.y, scale.z); GLKMatrix4 translateMatrix = GLKMatrix4MakeTranslation(position.x, position.y, position.z); GLKMatrix4 modelMatrix = GLKMatrix4Multiply(translateMatrix,GLKMatrix4Multiply(scaleMatrix,GLKMatrix4Multiply(zRotationMatrix, GLKMatrix4Multiply(yRotationMatrix, xRotationMatrix)))); GLKMatrix4 viewMatrix = GLKMatrix4MakeLookAt(0, 0, 1, 0, 0, -5, 0, 1, 0); effect.transform.modelviewMatrix = GLKMatrix4Multiply(viewMatrix, modelMatrix); effect.transform.projectionMatrix = GLKMatrix4MakePerspective(0.125*M_TAU, 1.0, 2, 0); effect.texture2d0.name = wallTexture.name; [effect prepareToDraw]; glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); glEnableVertexAttribArray(GLKVertexAttribPosition); glVertexAttribPointer(GLKVertexAttribPosition, 3, GL_FLOAT, GL_FALSE, 0, triangleVertices); glEnableVertexAttribArray(GLKVertexAttribTexCoord0); glVertexAttribPointer(GLKVertexAttribTexCoord0, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinates); glDrawArrays(GL_TRIANGLES, 0, 18); glDisableVertexAttribArray(GLKVertexAttribPosition); glDisableVertexAttribArray(GLKVertexAttribTexCoord0); }

Read the article

Problem in passing arrays from C# to C++

- by Rakesh K

Hi, I have an application in which I need to pass an array from C# to a C++ DLL. What is the best method to do it? I did some search on Internet and figured out that I need to pass the arrays from C# using ref. The code for the same: status = IterateCL(ref input, ref output); The input and output arrays are of length 20. and the corresponding code in C++ DLL is IterateCL(int *&inArray, int *&outArray) This works fine for once. But if I try to call the function from C# in a loop the second time, the input array in C# is showing up as an array of one element. Why is this happening and please help me how I can call this function iteratively from C#. Thanks, Rakesh.

Read the article

Good error flagging | PHP

- by Wayne

For everyone that was thinking of the error_reporting() function, then it isn't, what I need is whenever a MySQL query has been done, and the statement has like if($result) { echo "Yes, it was fine... bla bla"; } else { echo "Obviously, the echo'ing will show in a white page with the text ONLY..."; } Whenever statements have been true or false, I want the error to be appeared when redirected with the header() function and echo the error reporting in a div somewhere on the page. Basically something like this: $error = ''; This part appears inside the div tags <div><?php echo $error; ?></div> So the error part will be echoed when redirected with the header() if($result) { $error = "Yes, it was fine... bla bla"; header("Location: url"); } else { $error = "Something wrong happened..."; header("Location: url"); } But that just doesn't work :(

Read the article

Javascript / jQuery Exec turns up Null

- by Matrym

How do I skip over this next line if it turns out to be null? Currently, it (sometimes) "breaks" and prevents the script from continuing. var title = (/(.*?)<\/title/m).exec(response)[1]; $.get(url, function(response){ var title = (/<title>(.*?)<\/title>/m).exec(response)[1]; if (title == null || title == undefined){ return false; } var words = title.split(' '); $.each(words, function(index, value){ $link.highlight(value + " "); $link.highlight(" " + value); }); });

Read the article

Initialize a Variable Again.

- by SoulBeaver

That may sound a little confusing. Basically, I have a function CCard newCard() { /* Used to store the string variables intermittantly */ std::stringstream ssPIN, ssBN; int picker1, picker2; int pin, bankNum; /* Choose 5 random variables, store them in stream */ for( int loop = 0; loop < 5; ++loop ) { picker1 = rand() % 8 + 1; picker2 = rand() % 8 + 1; ssPIN << picker1; ssBN << picker2; } /* Convert them */ ssPIN >> pin; ssBN >> bankNum; CCard card( pin, bankNum ); return card; } that creates a new CCard variable and returns it to the caller CCard card = newCard(); My teacher advised me that doing this is a violation of OOP principles and has to be put in the class. He told me to use this method as a constructor. Which I did: CCard::CCard() { m_Sperre = false; m_Guthaben = rand() % 1000; /* Work */ /* Convert them */ ssPIN >> m_Geheimzahl; ssBN >> m_Nummer; } All variables with m_ are member variables. However, the constructor works when I initialize the card normally CCard card(); at the start of the program. However, I also have a function, that is supposed to create a new card and return it to the user, this function is now broken. The original command: card = newCard(); isn't available anymore, and card = new CCard(); doesn't work. What other options do I have? I have a feeling using the constructor won't work, and that I probably should just create a class method newCard, but I want to see if it is somehow at all possible to do it the way the teacher wanted. This is creating a lot of headaches for me. I told the teacher that this is a stupid idea and not everything has to be classed in OOP. He has since told me that Java or C# don't allow code outside of classes, which sounds a little incredible. Not sure that you can do this in C++, especially when templated functions exist, or generic algorithms. Is it true that this would be bad code for OOP in C++ if I didn't force it into a class?

Read the article

PHP Flatten Array with multiple leaf nodes

- by tafaju

What is the best way to flatten an array with multiple leaf nodes so that each full path to leaf is a distinct return? array("Object"=>array("Properties"=>array(1, 2))); to yield Object.Properties.1 Object.Properties.2 I'm able to flatten to Object.Properties.1 but 2 does not get processed with recursive function: function flattenArray($prefix, $array) { $result = array(); foreach ($array as $key => $value) { if (is_array($value)) $result = array_merge($result, flattenArray($prefix . $key . '.', $value)); else $result[$prefix . $key] = $value; } return $result; } I presume top down will not work when anticipating multiple leaf nodes, so either need some type of bottom up processing or a way to copy array for each leaf and process (althought that seems completely inefficient)

Read the article

validation of form with Jquery within asp.net mvc4 application

- by slatnia wadii

I am a beginner with Jquery and asp MVC4 I use the Jquery validate plugin <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.10.0/jquery.validate.js" type="text/javascript"> the code <script> jQuery(document).ready(function() { jQuery("#monFormulaire").validate({ rules: { "reclamation": { "required": true, "minlength": 4, "maxlength": 60000 }, "cause": { "required": true, "minlength": 4, "maxlength": 60000 }, "curative": { "required": true, "minlength": 4, "maxlength": 60000 }, "Closing_date": { "required": true, "minlength": 1, "maxlength": 60000 } }, submitHandler: function (form) { /* envoyer Mail*/ mailJob(); } }); }); <button type="submit" value="Page5" name="btnPage1" style="margin-left:1%" class="backRow" ></button> <table border="1" class="mytab" style="margin: auto;"> formulaire . </table> </form> The validation runs in the right way but the Action in the server side is not invoked anyone have any Idea ???

Read the article

Official way to ask jQuery wait for all images to load before executing something

- by Simon_Weaver

In jQuery when you do this: $(function() { alert("DOM is loaded, but images not necessarily all loaded"); }); It waits for the DOM to load and executes your code. If all the images are not loaded then it still executes the code. This is obviously what we want if we're initializing any DOM stuff such as showing or hiding elements or attaching events. Let's say though that I want some animation and I don't want it running until all the images are loaded. Is there an official way in jQuery to do this? The best way I have is to use <body onload="finished()">, but I don't really want to do that unless I have to. Note: There is a bug in jQuery 1.3.1 in Internet Explorer which actually does wait for all images to load before executing code inside $function() { }. So if you're using that platform you'll get the behavior I'm looking for instead of the correct behavior described above.

Read the article

How to dynamically assigning style properties to element?

- by poo

Read the article

Inverse relationship of two variables

- by Jam

this one is maybe pretty stupid.. Or I am just exhausted or something, but I just cant seem to solve it.. Problem : two variables X and Y, value of Y is dependent on value of X. X can have values ranging from some value to some value (lets say from 0 to 250) and y can have different values (lets say from 0.1 to 1.0 or something..) - but it is inverse relatonship (what I mean is: if value of X is e.g. 250, then value of Y would be 0.1 and when X decreases up to 0, value of Y raises up to 1.0.. So how should I do it? lets say I have function: -- double computeValue (double X) { /computation/ return Y; } Also, is there some easy way to somehow make the scaling of the function not so linear? - For example when X raises, Y decreases slower at first but then more rapidly in the end.. (rly dont know how to say it but I hope you guys got it) Thanks in advance for this stupid question :/

Read the article

Arbitrary Header content for each row in WPF datagrid

- by tk

I'm trying to put row header text based on a converter function of the index of the row. I found a way to bind to the datagridrow like below, but i can't find how to get the row index of the datagridrow object. <DataTemplate x:Key="MyRowHeaderTemplate" DataType="DataRowView"> <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Margin="1,0,1,0" Padding="1,0,1,0" Text="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGridRow}}, Path=Item}"/> </DataTemplate> How can i get the row index and use my converter function to set the row header text?

Read the article

Creating a method that is simultaneously an instance and class method

- by Mike Axiak

In Python, I'd like to be able to create a function that behaves both as a class function and an instance method, but with the ability to change behaviors. The use case for this is for a set of serializable objects and types. As an example: >>> class Thing(object): #... >>> Thing.to_json() 'A' >>> Thing().to_json() 'B' I know that given the definition of classmethod() in funcobject.c in the Python source, this looks like it'd be simple with a C module. Is there a way to do this from within python? Thanks!

Read the article

Jquery First Column Select Problem

- by oraclee

Hi all; Jquery Code: $("[id$=gridvv] tr").filter(function() { return $('td', this).length && !$('table', this).length }).click(function() { Alert('test'); }); i need "td = .locked" click <table> <tr> <td class="locked">Blabla<td> <td>test1</td> <td>test2</td> </tr> </table>

Read the article

What is wrong with the program

- by Naveen

I am getting error for below code: #include "parent_child.h" #include "child_proces.h" int main() { childprocess::childprocess(){} childprocess::~childprocess(){} /* parentchild *cp = NULL; act.sa_sigaction = cp->SignalHandlerCallback; act.sa_flags = SA_SIGINFO; sigaction(SIGKILL, &act, NULL); }*/ printf("Child process\n"); return 0; } ERROR: child_proces.cpp: In function âint main()â: child_proces.cpp:11: error: expected ;' before â{â token child_proces.cpp:12: error: no matching function for call to âchildprocess::~childprocess()â child_proces.h:9: note: candidates are: childprocess::~childprocess() child_proces.cpp:12: error: expected;' before â{â token

Read the article

In PHP is faster to get a value from an if statement or from an array?

- by Vittorio Vittori

Maybe this is a stupid question but what is faster? <?php function getCss1 ($id = 0) { if ($id == 1) { return 'red'; } else if ($id == 2) { return 'yellow'; } else if ($id == 3) { return 'green'; } else if ($id == 4) { return 'blue'; } else if ($id == 5) { return 'orange'; } else { return 'grey'; } } function getCss2 ($id = 0) { $css[] = 'grey'; $css[] = 'red'; $css[] = 'yellow'; $css[] = 'green'; $css[] = 'blue'; $css[] = 'orange'; return $css[$id]; } echo getCss1(3); echo getCss2(3); ?> I suspect is faster the if statement but I prefere to ask!

Read the article

javascript filter nested object based on key value

- by murray3

I wish to filter a nested javascript object by the value of the "step" key: var data = { "name": "Root", "step": 1, "id": "0.0", "children": [ { "name": "first level child 1", "id": "0.1", "step":2, "children": [ { "name": "second level child 1", "id": "0.1.1", "step": 3, "children": [ { "name": "third level child 1", "id": "0.1.1.1", "step": 4, "children": []}, { "name": "third level child 2", "id": "0.1.1.2", "step": 5, "children": []} ]}, ]} ] }; var subdata = data.children.filter(function (d) { return (d.step <= 2)}); This just returns the unmodified nested object, even if I put value of filter to 1. does .filter work on nested objects or do I need to roll my own function here, advise and correct code appreciated. cjm

Read the article

How to put tags inside an html attribute?

- by Mycol

Using xslt i want to create an attribute: <span class="tooltip"> <xsl:attribute name="onmouseover"> <xsl:text>javascript:function(</xsl:text> <span class="label">Aggiunta</span> <xsl:apply-tempaltes/> <xsl:text>)</xsl:text> </xsl:attribute> The problem is that only the pure text is putted inside the attribute, like <span class="tooltip" onmouseover="javascript:function(Aggiunta ...)"> whithout the span tags or the tags that may come from apply-templates. So how can I put html code into an attribute?

Read the article

jQuery animation if load() returns something different...

- by Dan LaManna

setInterval(function() { var prevTopArticle = $("#toparticles table:first").html(); $("#toparticles").load("myurloffeed.com/topfeed", function() { alternateBG(); var newTopArticle = $("#toparticles table:first").html(); if (prevTopArticle!=newTopArticle) { $("#toparticles table:first").effect("highlight", {color:"#faffc4"}, 2000); } }); }, 8000); So it sets the current first table item to a variable, loads the toparticles div with the tables off the url, and if they are different it will perform the highlight effect, however it does the highlight effect anyway, completely unsure why it isn't working.

Read the article

XML pass values to timer, AS3

- by VideoDnd

My timer has three variables that I can trace to the output window, but don't know how to pass them to the timer. How to I pass the XML values to my timer? Purpose I want to test with an XML document, before I try connecting it to an XML socket. myXML <?xml version="1.0" encoding="utf-8"?> <SESSION> <TIMER TITLE="speed">100</TIMER> <COUNT TITLE="starting position">-77777</COUNT> <FCOUNT TITLE="ramp">1000</FCOUNT> </SESSION> myFlash //myTimer 'instance of mytext on stage' /* fields I want to change with XML */ //CHANGE TO 100 var timer:Timer = new Timer(10); //CHANGE TO -77777 var count:int = 0; //CHANGE TO 1000 var fcount:int = 0; timer.addEventListener(TimerEvent.TIMER, incrementCounter); timer.start(); function incrementCounter(event:TimerEvent) { count++; fcount=int(count*count/1000);//starts out slow... then speeds up mytext.text = formatCount(fcount); } function formatCount(i:int):String { var fraction:int = i % 100; var whole:int = i / 100; return ("0000000" + whole).substr(-7, 7) + "." + (fraction < 10 ? "0" + fraction : fraction); } //LOAD XML var myXML:XML; var myLoader:URLLoader = new URLLoader(); myLoader.load(new URLRequest("time.xml")); myLoader.addEventListener(Event.COMPLETE, processXML); //PARSE XML function processXML(e:Event):void { myXML = new XML(e.target.data); trace(myXML.ROGUE.*); trace(myXML); //TEXT var text:TextField = new TextField(); text.text = myXML.TIMER.*; text.textColor = 0xFF0000; addChild(text); } RESOURCES OReilly's ActionScript 3.0 Cookbook, Chapter 12 Strings, Chapter 20 XML

Read the article

my javascript code is working in internet explorer but not working in mozilla

- by goutham

Read the article

Use LINQ to count the number of combinations existing in two lists

- by Ben McCormack

I'm trying to create a LINQ query (or queries) that count the total number of occurences of a combinations of items in one list that exist in a different list. For example, take the following lists: CartItems DiscountItems ========= ============= AAA AAA AAA BBB AAA BBB BBB CCC CCC DDD The result of the query operation should be 2 since I can find two combinations of AAA and BBB (from DiscountItems) within the contents of CartItems. My thinking in approaching the query is to join the lists together to shorten CartItems to only include items from DiscountItems. The solution would be to find the CartItem in the resulting query that occurs the least amount of times, thus indicating how many combinations of items exist in CartItems. How can this be done? Here's the query I already have, but it's not working. query results in an enumeration with 100 items, far more than I expected. Dim query = From cartItem In Cart.CartItems Group Join discountItem In DiscountGroup.DiscountItems On cartItem.SKU Equals discountItem.SKU Into Group Select SKU = cartItem.SKU, CartItems = Group Return query.Min(Function(x) x.CartItems.Sum(Function(y) y.Quantity))

Read the article

Generating random numbers in C

- by moonstruckhorrors

While searching for Tutorials on generating random numbers in C I found This Topic When I try to use the rand() function with parameters, I always get the random number generated 0. When I try to use the rand() function with parameters, I always get the value 41. And whenever I try to use arc4random() and random() functions, I get a LNK2019 error. Here's what I'm doing: #include <stdlib.h> int main() { int x; x = rand(6); printf("%d", x); } This code always generate 41. Where am I going wrong?? P.S. : I'm running Windows XP SP3 and using VS2010 Command Prompt as compiler. P.P.S. : Took me 15 minutes to learn how to format properly.

Read the article

WordPress + Facebook comments addition (php knowledge needed)

- by user1356223

I succeded to fetch Facebok comments number via this function: <?php function fb_comment_count() { global $post; $url = get_permalink($post->ID); $filecontent = file_get_contents('https://graph.facebook.com/?ids=' . $url); $json = json_decode($filecontent); $count = $json->$url->comments; if ($count == 0 || !isset($count)) { $count = 0; } echo $count; } ;?> And I call it with: <?php fb_comment_count();?> Now how do I add it to this code: <?php comments_number(__('No Comments'), __('1 Comment'), __('% Comments'), '', __('Comments Closed') ); ?> so that WordPress shows number of WP and FB comments together in one number. Thank you very much to everyone!

Read the article

Drawing random circles

- by ViktorC

I am trying to draw a cupola circles at random positions in an Android application. I draw them on a bitmap and then draw that bitmap on the canvas. This is the function where a draw the circles: private void drawRandomCircles(int numOfCircles) { Canvas c = new Canvas(b); Paint cPaint = new Paint; cPaitn.setColor(Color.RED); for(int i = 0; i < numOfCircles; i++) { int x = Math.Random % 100; int y = Math.Random % 100; c.drawCircle(x, y, 20, cPaint) } } The Bitmap b is global. And after calling this function I just draw the bitmap in the onDraw method. Now the problem is that I only get one circle drawn on the screen, no matter the size of numOfCircles. Any clue what is happening here?

Search Results

Search found 37844 results on 1514 pages for 'function composition'.

Page 634/1514 | < Previous Page | 630 631 632 633 634 635 636 637 638 639 640 641 | Next Page >

- by Nikita Barsukov

- by TommyT39

- by Rakesh K

- by Wayne

- by Matrym

- by SoulBeaver

- by tafaju

- by slatnia wadii

- by Simon_Weaver

- by poo

- by Jam

- by tk

- by Mike Axiak

- by oraclee

- by Naveen

- by Vittorio Vittori

- by murray3

- by Mycol

- by Dan LaManna

- by VideoDnd

- by goutham

- by Ben McCormack

- by moonstruckhorrors

- by user1356223

- by ViktorC

< Previous Page | 630 631 632 633 634 635 636 637 638 639 640 641 | Next Page >