Automating the InvokeRequired code pattern

Automating the InvokeRequired code pattern

I have become painfully aware of just how often one needs to write the following code pattern in event-driven GUI code, whereprivate void DoGUISwitch() { // cruisin for a bruisin' through exception city object1.Visible = true; obje

Why is “import *” bad?

Why is “import *” bad?

It is recommended to not to use import * in Python. Can anyone please share the reason for that, so that I can avoid it doing next time? 1:Because it puts a lot of stuff into your namespace (might shadow some other object from previous i

calling non-static method in static method in Java [duplicate]

calling non-static method in static method in Java [duplicate]

This question already has an answer here: Cannot make a static reference to the non-static method 8 answers I'm getting an error when I try to call a n

PHP + curl, HTTP POST sample code?

PHP + curl, HTTP POST sample code?

Can anyone show me how to do a php curl with an HTTP POST?I want to send data like this:username=user1, password=passuser1, gender=1To www.domain.comI expect the curl to return a response like result=OK. Are there any examples? 1:<?php/

C++: “std::endl” vs “\\n”

C++: “std::endl” vs “\\n”

Many C++ books contain example code like this...std::cout << "Test line" << std::endl;...so I've always done that too. But I've seen a lot of code from working developers like this instead:std::cout << "Test line\n";Is there a technical rea

What is a debugger and how can it help me diagnose problems?

What is a debugger and how can it help me diagnose problems?

This is intended to be a general purpose question to assist new programmers who have a problem with a program, but do not know how to use a debugger to diagnose the cause of the problem.This question covers two classes of more specific ques

Capture conversion issue in Java, WRT reconciliation of JLS and actual JDK behaviour

Capture conversion issue in Java, WRT reconciliation of JLS and actual JDK behaviour

Given the following two class definitions:class C1> {}class C2 extends C1> {}Consider the following type declaration:C1> c;This compiles fine in JDK-8u45, but if we examine the specification for capture conversion, it appears (to me) that t

How do you version your projects?

How do you version your projects?

I understand that Microsoft uses this template when versioning their products: Major.Minor.Build.Revision. Major is changed when the "developers" want to show that there is a big change in the software and backward compatibility cannot be a

Why C# compiler does not allows private property setters in interfaces?

Why C# compiler does not allows private property setters in interfaces?

In certain scenario like a MVVM view-model, I sometimes needs to have private setter as the view-model exposes a state that can only be modified internally.So is this wrong to need a private setter on an interface? (and I mean not particula

Angular 2.x watching for variable change

Angular 2.x watching for variable change

I'm migrating from angular 1.x to 2.x but my brains still think in angular 1.x so sorry for silly questions.What I need is to take some action when one of my scope variables component properties changes. I found a solution but I think there

How to show DatePickerDialog on Button click? [closed]

How to show DatePickerDialog on Button click? [closed]

I'm developing an app that requires user to select date(dd/mm/yyyy).I want to show a dialog box with DatePicker on button click.once date is selected it must show in EditText.I'm using Android Studio 2.2, project with min sdk is 23.Kindly h

Android App Development and Web Server Interactions

Android App Development and Web Server Interactions

I am just learning about Android Development so excuse me if this is a bit off in nature.I am wanting to make an app that interacts with a Database from my website, in a sense the two things will be one feeding the other. So with that. I am

Phonegap video capture crashes

Phonegap video capture crashes

I've made a relatively simple phonegap app, with the ability to capture images and videos and upload them to a server.Images work fine, however when I call to capture video the camera UI appears, and when I accept the video the app crashes

“Pivoting” a Table in SQL (i.e. Cross tabulation / crosstabulation)

“Pivoting” a Table in SQL (i.e. Cross tabulation / crosstabulation)

I'm working on trying to generate a report from a couple of database tables. The simplified version looks like thisCampaign----------CampaignIDSource-----------------------Source_ID | Campaign_IDContent--------------------------------------

How can I host a Silverlight 4 application in a WPF 4 application?

How can I host a Silverlight 4 application in a WPF 4 application?

I have a Silverlight 4 application that I want to double as a Kiosk application. It has to be full screen, touch-enabled, and most importantly have full trust. I was thinking of doing this using a WPF application to host the Silverlight X

Java unbound wildcard generics

Java unbound wildcard generics

Are there any advantages of using wildcard-type generics in the Bar class over completely skipping them?public class Foo {}public interface Bar { public void addFoo(Foo foo); public Foo getFoo(String name);} 1:There are multiple ad

OSX count pressed keys without accessibility access

OSX count pressed keys without accessibility access

I found that upwork.app can count pressed keys without accessibility access but I can not understand how it is done.I read a lot of themes like this one:OSX: Detect system-wide keyDown events?In all themes are saying that process should be

BackgroundWorker multithread access to form

BackgroundWorker multithread access to form

I am using 5 BackgroundWorker objects running at the same time for a certain purpose, and all of them have to change the same label. How do I do that?How do I modify the form from more than one thread then? And how do i do it in case i want

Sharing domain objects between activities

Sharing domain objects between activities

I have written my application logic in domain objects (to enable multiple user interfaces and porting to other platforms), and am now lookng at implementing Activities for the user interface.Considering that each activity needs to serialise

Export data from DynamoDB

Export data from DynamoDB

Is it possible to export data from DynamoDB table in some format?The concrete use case is that I want to export data from my production dynamodb database and import that data into my local dynamodb instance so my application can work with l

Can I use the Google Maps API to display a custom map?

Can I use the Google Maps API to display a custom map?

And by custom map I mean custom map tiles, as in, mapping another planet. I've looked all around but can't see to find any resources pointing how to do this on Google's or any website.I know it's possible because I've seen it done before on

How can I partition a Perl array into equal sized chunks?

How can I partition a Perl array into equal sized chunks?

I have a fixed-sized array where the size of the array is always in factor of 3.my @array = ('foo', 'bar', 'qux', 'foo1', 'bar', 'qux2', 3, 4, 5);How can I cluster the member of array such that we can getan array of array group by 3:$VAR =

How to access entity manager with spring boot and spring data

How to access entity manager with spring boot and spring data

How to get access to the entity manager in the repository when we use spring boot and spring data?Otherwise, i will need to put my big query in annotation, i would prefer to have something clear... then a long text. 1:You would define a

How does adding a private member variable break C++ ABI compatibility?

How does adding a private member variable break C++ ABI compatibility?

The pimpl idiom is commonly used in order to allow changing code in dynamically linked libraries without breaking ABI compatibility and having to recompile all the code that depends on the library.Most of the explanations I see mention that

Strange error in selenium after upgrading to chromedriver 2.28 needed for chrome 57

Strange error in selenium after upgrading to chromedriver 2.28 needed for chrome 57

After being forced to upgrading to chromedriver 2.28 to use selenium with chrome 57, I get the following error message:[0313/100022.689:ERROR:child_thread_impl.cc(762)] Request for unknown Channel-associated interface: ui::mojom::GpuMainAny