How do I use NSTimer?

How do I use NSTimer?

How do I use an NSTimer? Can anyone give me step by step instructions? 1:Firstly I'd like to draw your attention to the Cocoa/CF documentation (which is always a great first port of call). The Apple docs have a section at the top of each

SQL JOIN and different types of JOINs

SQL JOIN and different types of JOINs

What is a SQL JOIN and what are different types? 1:An illustration from W3schools: 2:What is SQL JOIN ?SQL JOIN is a method to retrieve data from two or more database tables.What are the different SQL JOINs ?There are a total of five

Reference — frequently asked questions about PDO

Reference — frequently asked questions about PDO

What is this?This is a list of frequently asked questions regarding PHP Data Objects Why is this?As PDO has some features unknown to a regular PHP user, questions regarding prepared statements and error handling in PDO are quite frequent. S

Is an array name a pointer?

Is an array name a pointer?

Is an array's name a pointer in C?If not, what is the difference between an array's name and a pointer variable? 1:An array is an array and a pointer is a pointer, but in most cases array names are converted to pointers. A term often use

How to get mysqli error in different environments?

How to get mysqli error in different environments?

In my LOCAL/DEV environment, the mysqli query is performing OK. However, when I upload it on my WEBHOST environment, I got this error; Fatal error: Call to a member function bind_param() on a non-object in...Here is the code:global $mysqli

Reference - What does this regex mean?

Reference - What does this regex mean?

What is this?This is a collection of common Q&A. This is also a Community Wiki, so everyone is invited to participate in maintaining it.Why is this?regex is suffering from give me ze code type of questions and poor answers with no explanati

Extract label values from a LabelledGeneric instance

Extract label values from a LabelledGeneric instance

Consider the following example:import shapeless._case class Foo(bar: String, baz: Boolean)val labl = LabelledGeneric[Foo]Now, the type of labl is (prettified)LabelledGeneric[Foo] { type Repr = FieldType[Symbol @@ String("bar"), String]

Parsing a string which represents a list of tuples

Parsing a string which represents a list of tuples

I have strings which look like this one:"(8, 12.25), (13, 15), (16.75, 18.5)"and I would like to convert each of them into a python data structure. Preferably a list (or tuple) of tuples containing a pair of float values.I could do that wit

How do I see what files were changed between 2 revisions?

How do I see what files were changed between 2 revisions?

I just want to see what files were modded/added/deleted between 2 arbitrary revisions. How do I do this?Can I do this in tortoise as well? 1:svn log -v -rX:Y .The -v for "verbose" switch will give you detailed output on which files were

Difference between ByVal and ByRef?

Difference between ByVal and ByRef?

What is the difference? I always use ByVal, but, I don't really have a good idea of when should I and when not... 1:If you pass in a reference, when you modify the value in the method, the variable in the call site will also be modified.

Why does the boolean data type need 8 bits? [duplicate]

Why does the boolean data type need 8 bits? [duplicate]

This question already has an answer here: Why is Javas boolean primitive size not defined? 7 answers Boolean data type only evaluates to true or false,

debug_backtrace() from registered shutdown function in PHP

debug_backtrace() from registered shutdown function in PHP

While tinkering for an answer to this question, I found that debug_backtrace() doesn't trace beyond the function registered to register_shutdown_function(), when called from within it.This was mentioned in this comment for register_shutdown

How to change a application Default Icon in PhoneGap [duplicate]

How to change a application Default Icon in PhoneGap [duplicate]

This question already has an answer here: How to add app icon within phonegap projects? 13 answers I am using phone gap do build an application for mul

Where does  in web.config go for MVC applications?

Where does in web.config go for MVC applications?

I'm attempting to implement custom error handling in my MVC 4 app. I'm not certain where in my web.config the is supposed to go, and the general information I need to include in it. 1: goes inside :

How do I debug a WordPress plugin?

How do I debug a WordPress plugin?

I've recently inherited a WordPress plugin that has a few bugs in it. My problem is that I'm also new to WordPress and I don't know how to log debug messages so that I can figure out what's going on. I really just need a way to create a pop

When does a dictionary throw an IndexOutOfRangeException on Add or ContainsKey?

When does a dictionary throw an IndexOutOfRangeException on Add or ContainsKey?

On a busy ASP .NET website, I have a Dictionary, which acts as a cache, basically storing key/value pairs for later retrieval.On high load, the Dictionary some times get into a state, where it always throws an IndexOutOfRangeException whene

Most current iOS version distribution percentage?

Most current iOS version distribution percentage?

I started working on a new app and I wanted to use all of the new iOS5 features (including storyboard) but I'm afraid to limit my app to iOS5 users only.I couldn't find any information about iOS5 usage VS iOSall users have iOS5. What matter

How do I mount a filesystem using Python?

How do I mount a filesystem using Python?

I'm sure this is a easy question, my Google-fu is obviously failing me.How do I mount a filesystem using Python, the equivalent of running the shell command mount ...?Obviously I can use os.system to run the shell command, but surely there

How can I find the screen/desktop size in Qt, so I can display a desktop notification?

How can I find the screen/desktop size in Qt, so I can display a desktop notification?

I want to code a notification window at the bottom right corner of the desktop, so it works like Skype notifications when someone comes online. Can someone help me get the screen size of the desktop, so I can place my notification window at

Garbage collection notification?

Garbage collection notification?

I'd like to register a callback with the JVM so I know when garbage collection is happening. Is there any way to do this?EDIT: I want to do this so I can log out when garbage collection happens in my application log, so I can see if it cor

Cancel a AngularJS $timeout on routeChange

Cancel a AngularJS $timeout on routeChange

On a specific page in my application I think of doing a server-call to update information on a set interval.I stumbled upon a problem though. I want to cancel my $timeout when a user navigates away from the page in question so that the appl

Array declaration and initialization in Java. Arrays behave differently, when the position of their

Array declaration and initialization in Java. Arrays behave differently, when the position of their

The following is the obvious and usual array declaration and initialization in Java.int r[], s[]; //A very similar case behaves differently, when the position of [] is changed in the declaration statement like as shown below.int []p,

Reading RTCP packets from an IP camera using FFMPEG

Reading RTCP packets from an IP camera using FFMPEG

I am using ffmpeg C++ library. I need to intercept RTCP packets from the camera in order to get the timestamp from the Sender Report. Is there any method or structure in the ffmpeg that gives me this information? I am completely stuck but I

Calling function of Action class in Jsp Struts2

Calling function of Action class in Jsp Struts2

I have a little scenario. I have two POJO classes and two tables User and Domain(same name for tables). Every user will belong to one and only one domain. I have two Action classes one is UsersManagemntAction and other is DomainsManagementA

How to access Jersey resource secured by @RolesAllowed

How to access Jersey resource secured by @RolesAllowed

We were testing a REST webservice developed in jersey through postman rest client. It is a POST method and is annotated with @RolesAllowed. The full annotation the method is as follows:@[email protected]("/configuration")@RolesAllowed("admin")@Prod