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  • pointers for getting elements of an array in C

    - by Manolo
    I am a newbie in C and I would like to get the elements of an array with a function, I have tried different options, but I still do not get the elements. My function is: void getelements(int *a, int cl) { int *p; for (p=&a[0];p<&a[cl];p++) { printf("%d\n",*p); } } I know that the solution should work like that, but it only prints the first element and then memory positions. I am calling my function with: int v={10,12,20,34,45}; getelements(&v,5); Any help? I need to use arithmetic of pointers. Thanks

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  • C++: Allocation of variables in a loop

    - by Rosarch
    Let's say I have a loop like this: vector<shared_ptr<someStruct>> vec; int i = 0; while (condition) { i++ shared_ptr<someStruct> sps(new someStruct()); WCHAR wchr[20]; memset(wchr, i, 20); sps->pwsz = wchr; vec.push_back(sps); } At the end of this loop, I see that for each sps element of the vector, sps->pwsz is the same. Is this because I'm passing a pointer to memory allocated in a loop, which is destructed after each iteration, and then refilling that same memory on the next iteration?

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  • Output of Iterable.sliding as Tuple

    - by ziggystar
    The method sliding on collections returns a sliding window of given size in the form of X[Iterable[A]] with X being the type of the collection and A the element type. Often I need two or three elements and I prefer to have them named. One ugly workaround for sliding(2) is the following: points.sliding(2).foreach{ twoPoints => val (p1,p2) = (twoPoints.head,twoPoints.last) //do something } This sucks and only works for two elements. Also note that (a,b) = (twoPoints(0),twoPoints(1)) doesn't work. Help me!

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  • How can I simulate a click event via script?

    - by Scott B
    I have a jquery accordion style menu that I'd like to add some shortcut links to across the top. When one of these shortcuts is clicked, it should have the same effect as if the user clicked the corresponding a tag that serves as that panel's header... Here's some code... <div> Application Shortcuts > <a href="" onclick="simulateAclick("generalSettings")>Open General Settings</a> </div> <ul class="menu collapsible"> <li class='header'><a href='#' id="generalSettings">General Settings</a> <ul class='acitem'>...stuff goes here... In the example above, clicking on "Open General Settings" toggles the "acitem" UL's child elements visible. I'd just like to simulate a click on that element, from a link at the top of my app...

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  • Jquery - how to create a sophisticated sidebar that smoothly scrolls down with you

    - by Gal
    I probably couldn't depict it better in the title (and if it has a term let me know), but just to quell the obscurity, I was referring to something like this. After you wait for the page to load, see how when you scroll down, the social media left bar stays fixed, but then when you scroll just enough that it meets your upper side, it sticks to it as you scroll further. I wanted to implement something corny and pretentious like that, so does anybody know a tutorial or a method to get that done in jquery? (I can probably do it myself, if I'm not mistaken, just need some sense of direction from savvy jqueryists). Is there a way to know when and how much a user scrolls? Can it be done with id's like the # url appendix to jump to a specific element? Just some ideas...

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  • Select <a> which is the second <a> on a page that contains some href text?

    - by Alex
    Hello there, I'm working with a page that has several links that contain the same href text, and I need to select the second anchor element on the page that contains said href text. Here's a simplified version of the link structure of the page: <a href="same/link/to/stuff/">same link</a> <a href="same/link/to/stuff/">same link</a> How do I fashion my selector so that it only selects the second anchor in the above example? Thanks!!

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  • Problem with onsubmit ID

    - by Liso22
    I need an onsubmit to return false if what's written on the first field is a certain PHP value however the field has a strange id format and I'm not quite sure how to add it in the onsubmit. This is the form, I didn't add the element ID to it: <form class="questionform" name="questionform-0" id="questionform-0" onsubmit="if (document.getElementById('').value == '<?php echo $casi; ?>') return false;" > <textarea class="question-box" style="width:97%;" cols="20" rows="4" id="question-box-' . $questionformid . '" name="title" type="text" maxlength="80" size="28" value=""></textarea> I tried many times but couldn't add it. How should I do it? Thanks

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  • C++ iterators problem

    - by qwead
    I'm working with iterators on C++ and I'm having some trouble here. It says "Debug Assertion Failed" on expression (this-_Has_container()) on line interIterator++. Distance list is a vector< vector< DistanceNode . What I'm I doing wrong? vector< vector<DistanceNode> >::iterator externIterator = distanceList.begin(); while (externIterator != distanceList.end()) { vector<DistanceNode>::iterator interIterator = externIterator->begin(); while (interIterator != externIterator->end()){ if (interIterator->getReference() == tmp){ //remove element pointed by interIterator externIterator->erase(interIterator); } // if interIterator++; } // while externIterator++; } // while

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  • How to style email body in php

    - by Vinay
    I want to style mail body. I have tried the below methods to style mail body. But all of them didn't work 1) Used external style sheet style.css td{padding:10px;} mail.php <link rel="stylesheet" href="style.css"></link><table><td>....</td></table> 2) Defined Internal Style Sheet: mail.php <style type="text/css"> td{ padding-bottom:8px; } </style> <table><td>....</td></table> I know, Inline style works by doing <td style='padding-bottom:8px'>, But i have got many tables, doing the inline style is not a good idea, Is there any work around so that no need to define style for each element

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  • best method in jquery for replacing rows in a table after server side processing such as mysql sorti

    - by Kevin J
    What is the 'best practice' when returning dynamic data for a table (server side sorting, filtering etc from a db) ? Do you return just the data in json, and repeatedly clone a row element, replacing the values in each row (thus decreasing the size of the ajax call, but increasing the client side processing), or return the full html, and replace with .html or .append? Or is there another method I'm missing? This is a frequent situation in my app, and in some cases a bottleneck, and I am unsure if what I am doing is the best solution. Currently, I return the row html and use a single .append call, after emptying all the rows except the header.

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  • A 3-D grid of regularly spaced points

    - by Jack
    I want to create a list containing the 3-D coords of a grid of regularly spaced points, each as a 3-element tuple. I'm looking for advice on the most efficient way to do this. In C++ for instance, I simply loop over three nested loops, one for each coordinate. In Matlab, I would probably use the meshgrid function (which would do it in one command). I've read about meshgrid and mgrid in Python, and I've also read that using numpy's broadcasting rules is more efficient. It seems to me that using the zip function in combination with the numpy broadcast rules might be the most efficient way, but zip doesn't seem to be overloaded in numpy.

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  • Pushin each_line into array not working

    - by zettt
    Hi, I've got a weird issue with Ruby. I want to read data from a file and put the data then into an array. The weird thing is, it's working in another script which does basically, the same thing. quoteArray = [] quoteFile = File.new("quotes.txt", "r") or die "Unable to open file..." quoteFile.each_line { |line| quoteArray.push line } puts quoteArray[0] All I get out of this is an array with one element where the whole text file is in. What's wrong? Is it my machine? The text file? Any ideas? Thanks in advance

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  • C++: Delete a struct?

    - by Rosarch
    I have a struct that contains pointers: struct foo { char* f; int* d; wchar* m; } I have a vector of shared pointers to these structs: vector<shared_ptr<foo>> vec; vec is allocated on the stack. When it passes out of scope at the end of the method, its destructor will be called. (Right?) That will in turn call the destructor of each element in the vector. (Right?) Does calling delete foo delete just the pointers such as foo.f, or does it actually free the memory from the heap?

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  • Stylesheets loading but styles not showing...

    - by echobase
    Hi- I have a website I created in VS2010 and am trying to run with IIS7. My website starts in all major browsers but for some reason the styles are not applied even though I've confirmed using Firebug that the stylesheets have indeed loaded. Also, when I use the inspect tool to click on an element, I can see in the right-side box the specific styles that are supposed to be applied. I thought this might be a permissions issue but I think I've got those set properly. Any help would be appreciated. Thanks.

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  • Problem with Firefox, javascript, and Canvas

    - by Rob
    I'm having a Firefox-specific issue with a script I wrote to create 3d layouts. The correct behavior is that the script pulls the background-color from an element and then uses that color to draw on the canvas. When a user mouses over a link and the background-color changes to the :hover rule, the color being drawn changes on the canvas changes as well. When the user mouses out, the color should revert back to non-hover color. This works as expected in Webkit browsers and Opera, but Firefox chokes on it if mouseout is triggered and no mouseover event follows it. This is easier to see than for me to describe, and it's too much code to post here, so here is a link: http://www.robnixondesigns.com/strangematter/

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  • Interesting XSL Dilemma

    - by bobber205
    I've got this issue. A template called "checkbox" that's called from while inside a table HTML element and also outside of it. To solve an issue, I've added tags to "checkbox" input control. Here's what I'd like to do to but I'm not sure if it's possible or not. When I hit my "row" (part of the custom table markup) template, I would set some variable or pass some parameter, that for each template applied afterwards, would know it was in a "row" and do something special based on this information. I know I can't add parameters to apply-templates. I may be able to add a row "mode" but I can't make changes to each template and have one copy with the mod parameter and one without. Thanks for any suggestions. I know the ideal solution would to be to make changes to the XML but I'm not sure if I can do that as this point. That's a "content" issue. :P Thanks!

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  • What is a better way to write this regular expression?

    - by rxgx
    I am converting XML children into the element parameters and have a dirty regex script I used in Textmate. I know that dot (.) doesn't search for newlines, so this is how I got it to resolve. Search language="(.*)" (.*)<education>(.*)(\n)?(.*)?(\n)?(.*)?(\n)?(.*)?</education> (.*)<years>(.*)</years> (.*)<grade>(.*)</grade> Replace grade="$13" language="$1" years="$11"> <education>$3$4$5$6$7$8$9</education> I know there's a better way to do this. Please help me build my regex skills further.

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  • Double right click to Show a PopUpMenu with A TListView !!

    - by djiga4me
    Hi, I have a TListView and TPopupMenu, and I want to show a context menu when I right click on a TListItem. I tried the "AutoPopup" by assigning the component, but on a right click the PopupMenu is shown only and the wanted element is not selected. So i tried to use the "OnMouseDown", but we need to click and click again to show the menu on the wanted item. The first click is to select the item and the second shows the menu. But I want just a one click to do the two things. Do you have and idea about the problem? Thank you.

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  • Order a List (C#) by many fields?

    - by Esabe
    Hi everyone, I want to order a List of objects in C# by many fields, not just by one. For example, let's suppose I have a class called X with two Attributes, A and B, and I have the following objects, in that order: object1 = A = "a", B = "h" object2 = A = "a", B = "c" object3 = A = "b", B = "x" object4 = A = "b", B = "b" and I want to order the list by A attribute first, and when they are equals, by B element, so the order would be: "a" "c" "a" "h" "b" "b" "b" "x" As far as I know, the OrderBy method order by one parameter. Question: How can I order a C# List by more than one field? Thank you very much

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  • Change selected value of drop down list with jQuery

    - by Phairoh
    I have a drop down list with known values. What I'm trying to do is set the drop down list to a particular value that I know exists using jQuery. Using regular JavaScript, I would do something like: ddl = document.getElementById("ID of element goes here"); ddl.value = 2; // 2 being the value I want to set it to. However, I need to do this with jQuery because I'm using a CSS class for my selector (stupid ASP.NET client ids...). Here are a few things I've tried: $("._statusDDL").val(2); // doesn't find 2 as a value $("._statusDDL").children("option").val(2) // also failed. How can I do it with jQuery?

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  • IE7 preventDefault() not working on skip links

    - by josh
    I currently have skip links that jump to the div ids and was using e.preventDefault() to stop the url from changing when jumping to the element but in IE7 and IE8 it doesn't work at all using e.preventDefault() and if I take it out the url changes to the div the anchor tag contains reference to. Is their any fix or way around this? Here is the code $('body').delegate('a.skiplink-accessible-text', 'click', function (e) { //e.preventDefault(); if (!$.browser.msie) { e.preventDefault(); } var jumpTo = $(this).attr('href'); $('body').find(jumpTo).attr('tabindex', - 1).focus(); }); EDIT: heres a little jsbin example for testing purposes http://jsbin.com/welcome/20846/edit

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  • Calling a method on an object a bunch of times versus constructing an object a bunch of times

    - by Ami
    I have a List called myData and I want to apply a particular method (someFunction) to every element in the List. Is calling a method through an object's constructor slower than calling the same method many times for one particular object instantiation? In other words, is this: for(int i = 0; i < myData.Count; i++) myClass someObject = new myClass(myData[i]); slower than this: myClass someObject = new myClass(); for(int i = 0; i < myData.Count; i++) someObject.someFunction(myData[i]); ? If so, how much slower?

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  • Access Ruby on Rails 'public' directory without relative path

    - by huntca
    I have a flash object I wish to load and I belive the best place to store that asset is in the public directory. Suppose it's stored in public/flash, there must be a better way to path to the swf than what I've done below. Note the 'data' element, it has a relative path. def create_vnc_object haml_tag :object, :id => 'flash', :width => '100%', :height => '100%', :type => 'application/x-shockwave-flash', :data => '../../flash/flash.swf' do haml_tag :param, :name => 'movie', :value => '../../flash/flash.swf' end end Is there some rails variable that points to public?

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  • JQuery - How do I count the number of elements selected by a selector?

    - by Josh
    I am using $().fadeOut() to fade items out in a list ( < li < /li). When the list is empty I wish to hide a parent object. I plan on doing this by checking in my trigger event that fades the list if the count of the objects is 0 then hide the parent element. I can use the fadeOut callback to remove the elements if necessary. The to the point question: How do I select li tags inside a ul and then get the total count of them using jquery?

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  • cakephp links not relative

    - by Dan
    In my layout, I have a menu that I've included as an element, and it contains a link like so.. <? $html->link('New Part Number','/part_numbers/add'); ?> The problem that I have is that cake isn't redirecting correctly and it ends up sending me to "http://localhost/part_numbers/add" instead of "http://localhost/my_client_folder/client_app/part_numbers/add" (I'm building this locally). My cakephp app is stored a few directories below my webroot folder, but I thought cakephp would autodetect how to build the linking no matter where the application was located, right? So do i need to configure the application root folder, or create a route or something? Thanks!

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