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How to detect a loop in a linked list?
...ou can make use of Floyd's cycle-finding algorithm, also known as tortoise and hare algorithm.
The idea is to have two references to the list and move them at different speeds. Move one forward by 1 node and the other by 2 nodes.
If the linked list has a loop they
will definitely meet.
Else eith...
What is an initialization block?
... are two types of initialization blocks:
instance initialization blocks, and
static initialization blocks.
This code should illustrate the use of them and in which order they are executed:
public class Test {
static int staticVariable;
int nonStaticVariable;
// Static init...
How to convert enum value to int?
... tax.getValue();
}
(I've changed the names to be a bit more conventional and readable, btw.)
This is assuming you want the value assigned in the constructor. If that's not what you want, you'll need to give us more information.
...
How do I show/hide a UIBarButtonItem?
...
Save your button in a strong outlet (let's call it myButton) and do this to add/remove it:
// Get the reference to the current toolbar buttons
NSMutableArray *toolbarButtons = [self.toolbarItems mutableCopy];
// This is how you remove the button from the toolbar and animate it
[toolb...
How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
...ave the UI frontend built using the new Metro style of apps for windows 8, and would like it to communicate with a .NET application running on the desktop on the same local machine (e.g. a windows service app).
...
What's the difference between integer class and numeric class in R
...t common of which are double (for double precision floating point numbers) and integer. R will automatically convert between the numeric classes when needed, so for the most part it does not matter to the casual user whether the number 3 is currently stored as an integer or as a double. Most math ...
What to gitignore from the .idea folder?
I started using WebStorm for web development and am not sure what to add and what to exclude from our Git repository. Clearly some files inside the .idea folder are meant to be version controlled like the external library settings ( jsLibraryMappings.xml ) but others will probably change very ofte...
Cannot set some HTTP headers when using System.Net.WebRequest
...
If you need the short and technical answer go right to the last section of the answer.
If you want to know better, read it all, and i hope you'll enjoy...
I countered this problem too today, and what i discovered today is that:
the above ans...
How different is Scrum practice from Agile Practice? [duplicate]
Mostly people say Scrum and Agile interchangeably but what is the difference between Scrum Practice as compared to Agile Practice ?
...
How do you upload images to a gist?
...ag an image into the comment field below. This will upload your image file and insert the markdown code with the url for your uploaded image.
Copy this markdown and paste it into the file you want to display it.
Live example
...