C++ delete - It deletes my objects but I can still access the data?

C++ delete - It deletes my objects but I can still access the data?

I have written a simple, working tetris game with each block as an instance of a class singleblock.class SingleBlock{ public: SingleBlock(int, int); ~SingleBlock(); int x; int y; SingleBlock *next;};class MultiBlock{ pu

Find the min/max element of an Array in JavaScript

Find the min/max element of an Array in JavaScript

How can I easily obtain the min or max element of a JavaScript Array?Example Psuedocode:let array = [100, 0, 50]array.min() //=> 0array.max() //=> 100 1:How about augmenting the built-in Array object to use Math.max/Math.min instead:Arra

NullPointerException accessing views in onCreate()

NullPointerException accessing views in onCreate()

This is a canonical question for a problem frequently posted on StackOverflow.I'm following a tutorial. I've created a new activity using a wizard. I get NullPointerException when attempting to call a method on Views obtained with findViewB

How to access the correct `this` inside a callback?

How to access the correct `this` inside a callback?

I have a constructor function which registers an event handler:function MyConstructor(data, transport) { this.data = data; transport.on('data', function () { alert(this.data); });}// Mock transport objectvar transport = {

C++ compiler warning - returning local variable

C++ compiler warning - returning local variable

I'm simply trying to overload a + operator and I'm getting this compiler warningreference to local variable 'tmp' returnedHere is the code for the overloadconst Int& Int::operator+(const Int& p) const{ Int tmp = value + p.value; retur

Run a script in the same directory as the current script

Run a script in the same directory as the current script

I have two Bash scripts in the same folder (saved somewhere by the user who downloads the entire repository):script.sh is run by the userhelper.sh is required and run by script.shThe two scripts should be in the same directory. I need the f

Why does MPI_Init accept pointers to argc and argv?

Why does MPI_Init accept pointers to argc and argv?

this is how we use MPI_Init functionint main(int argc, char **argv){ MPI_Init(&argc, &argv);…}why does MPI_Init use pointers to argc and argv instead of values of argv? 1:According to the answer stated here:Passing arguments via comma

Android Robolectric Click RecyclerView Item

Android Robolectric Click RecyclerView Item

Is there any way to simulate a click on a RecyclerView item with Robolectric? So far, I have tried getting the View at the first visible position of the RecyclerView, but that is always null. It's getChildCount() keeps returning 0, and find

PyQt4 set windows taskbar icon

PyQt4 set windows taskbar icon

I'm working on an applcation in Python's PyQt4 and cannot find how to change the taskbar icon. I made my .ui files in Qt's Designer, where I can change the windowIcon properties. But that is not what I am looking for. I want to change the l

Get first element from a dictionary

Get first element from a dictionary

I have the following declaration:Dictionary> like = new Dictionary>();I need to get the first element out, but do not know the key or value. What's the best way to do this? 1:Edit To satisfy the commenters.Note that to call First here is

Stored Procedure parameter default value - is this a constant or a variable

Stored Procedure parameter default value - is this a constant or a variable

Here is my code:USE [xxx]GOSET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOCREATE PROCEDURE [dbo].[problemParam] @StartDate INT = CONVERT(INT,(CONVERT(CHAR(8),GETDATE()-130,112))), @EndDate INT = NULLAS BEGINSSMS is not too happy with

polymer form using paper-input and core-ajax

polymer form using paper-input and core-ajax

i am working on a custom element that will serve as a form for sending map node data to a database using a restful service. i have 3 questions about this element.can this even work? i am trying to use a method which seems exactly the opposi

using CKEditor with jQuery validation plugin not working

using CKEditor with jQuery validation plugin not working

I'm using CKeditor and the jQuery validation plugin from basistance. My textarea (with the CKEditor on it) is being validated by jQuery, but that only works after the second click on my submit button.In short:the first time I submit the for

How to reload a chrome extension automatically?

How to reload a chrome extension automatically?

I am developing a chrome extension, and I found that there are repeating useless manual reloading works.When you save a file, you have to refresh the chrome:\\extensions page to let browser to reload the extension. And then you have to relo

uEye camera with python on Windows

uEye camera with python on Windows

I need to get a uEye camera working with python on Windows in order to take pictures and operate on the live stream.Since uEye cameras are widely spread industrial cameras I would have thought that there is a standard solution to this; howe

AutoLayout uitableviewcell in landscape and on iPad calculating height based on portrait iPhone

AutoLayout uitableviewcell in landscape and on iPad calculating height based on portrait iPhone

I'm learning / experimenting with autolayout and UITableViewCell's. I asked another question a few days ago to which I answered my own question, I'm still using the same constraints / code. For the full code see here: AutoLayout multiline U

PHP sending POST request via curl

PHP sending POST request via curl

I need to make a POST request to an external http API using curl. When I call the API using the curl command line, it returns the correct data. However, I'm struggling to get the right data when calling it from a php script.When I use the c

Is there a better way to get ClientID's into external JS files?

Is there a better way to get ClientID's into external JS files?

I know this has been asked before, but I've found a different way to get references to controls in external JS files but I'm not sure how this would go down in terms of overall speed.My code ispublic static void GenerateClientIDs(Page page,

Core Data Migration - Can't find mapping model for migration

Core Data Migration - Can't find mapping model for migration

I followed the guide found here:http://www.timisted.net/blog/archive/core-data-migration/but keep getting "Can't find mapping model for migration" when I start up the app with the new model. I've tried it in xcode 3 and xcode 4, multiple ti

Java - Stop a long running thread which accesses database

Java - Stop a long running thread which accesses database

I start couple of threads, but I do not have their references to stop by signalling or something.For example, I can't pass a variable like running=false to those threads, because I do not have their references, but have their names.I'm usin

Why do books say, “the compiler allocates space for variables in memory”?

Why do books say, “the compiler allocates space for variables in memory”?

Why do books say, "the compiler allocates space for variables in memory". Isn't it the executable which does that? I mean, for example, if I write the following program,#include using namespace std;int main(){ int foo = 0; coutand com

ThreadPool.QueueUserWorkItem with function argument

ThreadPool.QueueUserWorkItem with function argument

I am using C# 2.0 and want to call a method with a couple of parameters with the help of ThreadPool.QueueUserWorkItem, so I tried as follows:ThreadPool.QueueUserWorkItem(new WaitCallback(Multiply(2, 3)));private int Multiply(int x,int y){

Is it possible to use the logical call context within a unit test in VS 2010?

Is it possible to use the logical call context within a unit test in VS 2010?

Is it possible to make this test not throw an exception? It appears that adding any non-GACed class into the logical call context causes an exception to be thrown in line 2 of the test. Test 'TestProject1.UnitTest1.TestMethod1' failed: T

Using final methods to initialize an instance variable

Using final methods to initialize an instance variable

From the Sun docs Normally, you would put code to initialize an instance variable in a constructor.There are two alternatives to using a constructor to initialize instance variables: initialize blocks and final methods.I could unders

R foreach with .combine=rbindlist

R foreach with .combine=rbindlist

I am using foreach with a .combine = rbindlist. This does not appear to work, although it works fine if I use .combine = rbind.Just to illustrate using a simple example t2 foreach (i=1:3, .combine=rbind) %dopar% unique(t2) col11: 12: