Is there a performance difference between i++ and ++i in C++?

Is there a performance difference between i++ and ++i in C++?

We have the question is there a performance difference between i++ and ++i in C?What's the answer for C++? 1:[Executive Summary: Use ++i if you don't have a specific reason to use i++.]For C++, the answer is a bit more complicated.If i i

Prototypical inheritance - writing up [duplicate]

Prototypical inheritance - writing up [duplicate]

This question already has an answer here: Javascript object members that are prototyped as arrays become shared by all class instances 3 answers So I h

“Thinking in AngularJS” if I have a jQuery background? [closed]

“Thinking in AngularJS” if I have a jQuery background? [closed]

Suppose I'm familiar with developing client-side applications in jQuery, but now I'd like to start using AngularJS. Can you describe the paradigm shift that is necessary? Here are a few questions that might help you frame an answer:How do I

Strings don't seem to be equal in Java on Android, even though they print the same

Strings don't seem to be equal in Java on Android, even though they print the same

I've got a problem that I'm rather confused about. I have the following lines of code in my android application:System.out.println(CurrentNode.getNodeName().toString());if (CurrentNode.getNodeName().toString() == "start") { System.out.pr

Three.js png texture - alpha renders as white instead as transparent

Three.js png texture - alpha renders as white instead as transparent

I'm creating a cube and I apply 6 different textures to each of it's faces. Each texture is a .png file and contains transparent parts. I'm also applying a color to the cube - I want to see that color trough png transparency.Problem: Transp

How to configure Hudson and git plugin with an SSH key

How to configure Hudson and git plugin with an SSH key

I've got Hudson (continuous integration system) with the git plugin running on a Tomcat Windows Service. msysgit is installed and the msysgit bin dir is in the path. PuTTY/Pageant/plink are installed and msysgit is configured to use them. W

MySQL Workbench - Connect to a Localhost

MySQL Workbench - Connect to a Localhost

I just installed MySQL Workbench and there are no connections available for my localhost server. When I try to make one, I get an error popup. Has anyone experienced something like this before and would be able to help me out?Here is what

How to call a controller method from a button in rails 4

How to call a controller method from a button in rails 4

So I feel really stupid right now, but I can't seem to find an answer.So I have a method which needs to be called EXACTLY once, and since this is only the experimental phase, I decided that a simple button should suffice. However, I can't s

Facebook crops open graph image in to a square

Facebook crops open graph image in to a square

I'm trying to create a custom open graph story to Facebook but I'm having some trouble getting the og:image to show properly. I'm using a 1200*630 sized image as recommended here and here but on my timeline it gets cropped in to a square fr

Python Logging to Tkinter Text Widget

Python Logging to Tkinter Text Widget

Does any one out there have an example of how to setup logging in Python to a Tkinter Text Widget? I have seen this used in several apps but cannot figure out how to direct the logging to anything other than a log file. 1:You should sub

stop development server when i stop debugging

stop development server when i stop debugging

How can automatically I stop the development web server when I stop debugging in Visual Studio? 1:There is no way to get the Asp.Net development service to automatically stop when you hit the "stop debugging" button, as all that does is

change uitextview hyperlink color [duplicate]

change uitextview hyperlink color [duplicate]

This question already has an answer here: Can I change the color of auto detected links on UITextView? 9 answers I am using UITextView and i want to ch

What version of Python is on my Mac?

What version of Python is on my Mac?

I have a mac, when I do :python --version I got :Python 2.7.6but when I got to :/System/Library/Frameworks/Python.framework/Versions/3.3where is 2.7.6 located ?any advice what should I do? UPDATE :$ which -a python python3/usr/bin/python/us

“Subversion command line client version is too old” error in Android Studio

“Subversion command line client version is too old” error in Android Studio

Whenever I open a project in Android Studio, I'll see this error:When I click "Fix it", it will show this window:I don't know what to do because I'm running TortoiseSVN 1.9.0, which is the latest version.What should I do to fix this error?

How to hide {{title}} in  tag while using AngularJS?

How to hide {{title}} in tag while using AngularJS?

I want to dynamically update the of my page based on which route / page a user is viewing. Problem is, when the page loads, for a few seconds it shows {{title}} inside my tag where it later puts in the title of the current page (loaded f

Delphi 7: how to execute shell command and check the result?

Delphi 7: how to execute shell command and check the result?

I'm using Delphi 7 and can't predict the target version of Windows.I need to create a database (probably MySql, but might be something else) and define some table structures. I do not need to populate any data. Unfortunately, all of the ADO

Cleaning up Paperclip error messages

Cleaning up Paperclip error messages

Okay, so i've got paperclip working, and I'm trying to use the built in validator to make sure that the file uploadedIs an imageIs not too bigSo I have this in the model, per the documentation:validates_attachment :avatar,:content_type => {

Android : Why Intent.EXTRA_LOCAL_ONLY shows Google Photos

Android : Why Intent.EXTRA_LOCAL_ONLY shows Google Photos

What I'm trying to do in my application is to let the user choose a picture from his phone's gallery(Don't want to get gallery images only but also allowing a user to choose their app of choice). The code I'm using is as follows: Intent int

How to change the button backgrounds inside JOptionPane

How to change the button backgrounds inside JOptionPane

I was wondering if anybody knew if it was possible to change the background color on the buttons inside a JOptionPane. I know how to change the entire JOptionPane background using a UIManager, but know what I want is to set the individual

Dealing with readLines() function in R

Dealing with readLines() function in R

I'm experiencing a very hard time with R lately.I'm not an expert user but I'm trying to use R to read a plain text (.txt) file and capture each line of it. After that, I want to deal with those lines and make some breaks and changes in the

Epplus number of drop down items limitation in excel file

Epplus number of drop down items limitation in excel file

Consider this code:var dropDown = sheet.DataValidations.AddListValidation(cells[2, colIndex, maxCol, colIndex].Address); foreach (var bb in brokerBranchs) { dropDown.Formula.Values.Add(bb.Titl

Parallel query worker thread was involved in a deadlock

Parallel query worker thread was involved in a deadlock

I run an SQL Server Trace to track some deadlocks issues and I was hit on the head with this comment Parallel query worker thread was involved in a deadlock as a reason for the deadlock.Q1: Does this means that the same query is deadlocking

LibGDX - How to integrate AdMob for both iOS and Android

LibGDX - How to integrate AdMob for both iOS and Android

I am following this tutorial for AdMob integration through LibGDX, but it shows for Android only. I am just wondering if someone has an example how to achieve same integration including iOS? Also, how can I use banners instead of full scree

Modifying emacs forward-word / backward-ward behavior (to be like in vi/vim)

Modifying emacs forward-word / backward-ward behavior (to be like in vi/vim)

What would be the easiest way to have the same kind of behavior that is in vim for the word back and forth navigation? In vim when you press "w" it moves a cursor forward one word, where word consists of a sequence of letters, digits and un

Bash split string on delimiter, assign segments to array

Bash split string on delimiter, assign segments to array

In bash, I would like to transform a PATH-like environment variable that may contain space-separated elements into an array, making sure elements bearing spaces do not cause word-splitting, appearing as "multiple elements".Let PATH_VARIABLE