How does “this” keyword work within a function?

How does “this” keyword work within a function?

I just came across an interesting situation in JavaScript. I have a class with a method that defines several objects using object-literal notation. Inside those objects, the this pointer is being used. From the behavior of the program, I

How to flush output of Python print?

How to flush output of Python print?

How do I force Python's print function to output to the screen?This is not a duplicate of Disable output buffering - the linked question is attempting unbuffered output, while this is more general. The top answers in that question are too p

Why is the gets function so dangerous that it should not be used?

Why is the gets function so dangerous that it should not be used?

When I try to compile C code that uses the gets() function with GCC,I get thiswarning: (.text+0x34): warning: the `gets' function is dangerous and should not be used.I remember this has something to do with stack protection and security,

Forward declare a struct in Objective-C

Forward declare a struct in Objective-C

I'm creating a protocol, and one of the parameters to a method I'm defining is a CMTime*. I would like to forward declare CMTime as opposed to including it. However, I've tried @class CMTime and it complains that it is redefined elsewhere a

What does “three dots” in Python mean when indexing what looks like a number?

What does “three dots” in Python mean when indexing what looks like a number?

What is the meaning of x[...] below?a = np.arange(6).reshape(2,3)for x in np.nditer(a, op_flags=['readwrite']): x[...] = 2 * x 1:While the proposed duplicate What does the Python Ellipsis object do? answers the question in a general p

slf4j logging with jdk – how to enable debug?

slf4j logging with jdk – how to enable debug?

By default slf4j, when using with jdk (slf4j-jdk14-1.6.1.jar), does not log debug messages.How do I enable them?I can’t find info neither in the official docs, the web or here on how to enable it.I found some info on (failed though) creatin

Unable to install or run the application: Click Once

Unable to install or run the application: Click Once

I published my .net application using ClickOnce, and all my users get the following error message on trying to open the program:"Unable to install or run the application. The application requires that assembly Telerik.Windows.Data Version 2

Why are all my log4net levels false?

Why are all my log4net levels false?

I'm using log4net in my ASP.NET MVC3 project, but all logging properties such as IsDebugEnabled == falseIn my AssemblyInfo I have:[assembly: XmlConfigurator(Watch = true)]In my log class I havepublic Log4NetLogger(){ log4net.Config.XmlCo

profiling a method of a class in Python using cProfile?

profiling a method of a class in Python using cProfile?

I'd like to profile a method of a function in Python, using cProfile. I tried the following:import cProfile as profile# inside class method...profile.run("self.myMethod()", "output_file")but it does not work. How can I call a self.method w

How to replace all spaces in a string

How to replace all spaces in a string

i have two html text input, out of that what ever user type in first text box that need to reflect on second text box while reflecting it should replace all spaces to semicolon. I did to some extant and it replacing for first space not for

in pycharm, how to go back to last location

in pycharm, how to go back to last location

i've tried these answers, but nothing happened:Keyboard shortcut for Jump to Previous View Location (Navigate back/forward) in IntelliJ Ideafor example:i'm navigating to a function body,put the cursor on a function call,click F12 ("go to de

Zend Framework 2 - Multiple modules by URL

Zend Framework 2 - Multiple modules by URL

I'm currently using the ZendFrameworkSkeleton application from Git and am trying to utilize the module part of it to have a multitude of modules, changeable by URL like so:http://localhost/application/index/index/http://localhost/guestbook/

javascript equivalent of PHP's call_user_func()

javascript equivalent of PHP's call_user_func()

Does anyone know if there is one?I want to call a function using a variable name.edit:I posted a fiddle here with what I'm trying to do:http://jsfiddle.net/sAzPA/ ...js:(function($){ $.fn.MyPlugin = function(){ return this.each(functio

Google Chrome Silent Push Notifications

Google Chrome Silent Push Notifications

I've been reading through the docs for Chrome's implementation of the Web Push API here, and I noticed the API says "you promise to show a notification whenever you receive a push" and under limitations it's stated "you have to show a notif

What is the correct way to handle “out of memory”?

What is the correct way to handle “out of memory”?

Recently, I work on a video player program on Windows for a CCTV program. As the program has to decode and play many videos streams at the same time, I think it might meet the situation that malloc will fail and I add checking after every

How to obtain a correct dump using mysqldump and single-transaction when DDL is used at the same tim

How to obtain a correct dump using mysqldump and single-transaction when DDL is used at the same tim

I'm new to MySQL and I'm figuring out the best way to perform an on-line hot logical backup using mysqldump. This page suggests this command line:mysqldump --single-transaction --flush-logs --master-data=2 --all-databases > backup

Python Socket Listening

Python Socket Listening

All of the below mentioned is on windows machines using python 2.7Hello,I am currently attempting to listen on a socket for data send by a remote program. This data is then printed to the screen and user input is requested that is then retu

How to save a checkbox meta box in WordPress?

How to save a checkbox meta box in WordPress?

I'm trying to add a checkbox into my custom meta box in WordPress and I ran into a problem with saving it - whenever I check the checkbox and update the post/page, it comes back unchecked again.Here's the code I'm using:add_meta_box( 'sl

Accessing “Public” methods from “Private” methods in javascript class

Accessing “Public” methods from “Private” methods in javascript class

Is there a way to call "public" javascript functions from "private" ones within a class?Check out the class below:function Class(){ this.publicMethod = function() { alert("hello"); } privateMethod = function() {

Is there a way to locate which part of the process used the most of the memory, only looking at a ge

Is there a way to locate which part of the process used the most of the memory, only looking at a ge

I have a process (that is started by a watch-dog every time, it's stopped for some reason), that uses usually about 200MB memory. Once I saw it's eating up the memory - with memory usage about 1.5-2GB, which definitely means a "memory leak"

How to step one step back in IntelliJ?

How to step one step back in IntelliJ?

Is it possible to step backwards through executed code in a debug session?For example I step over a method called abc() expecting to get 12 but after re-checking the value returned I notice it's 5 instead of 12. How can I step back to where

How to use the global.php/local.php configs in the getConfig() of a module in a Zend Framework 2 app

How to use the global.php/local.php configs in the getConfig() of a module in a Zend Framework 2 app

In a ZF2 application I have some cofigs, that: 1. need to be different dependening on the environment; 2. are specific for a concrete module. I'm curently using it like here described:global.php & local.phpreturn array( ... 'modules'

How to overwrite a function using a userscript?

How to overwrite a function using a userscript?

I want to change parts of the webpage display, is it possible to overwrite a function with a userscript? Below is the function I would like overwritten (also found Here):function StartDrawing() { if ((typeof (systemsJSON) != "undefined")

continuation in common lisp by macros — regarding an implemetation in OnLisp

continuation in common lisp by macros — regarding an implemetation in OnLisp

In On Lisp, p. 267, Paul Graham provides an implementation of continuation passing macros:(setq *cont* #'identity)(defmacro =lambda (parms &body body) `#'(lambda (*cont* ,@parms) ,@body))(defmacro =defun (name parms &body body) (let ((f (

Android camera , onPictureTaken(byte[] imgData, Camera camera) method & PictureCallback never ca

Android camera , onPictureTaken(byte[] imgData, Camera camera) method & PictureCallback never ca

I have a custom camera app , that previews the camera video output on SurfaceView and attempts to take pictures , the pics should be will be processed by “xzing “scanner API to decode any barcodes in the image. My app previews correctly an