Tutorial by Examples: n

The minification is used to reduce the size of CSS and Javascript files to speed up download times. This process is done by removing all of the unnecessary white-space, comments, and any other non-essential content from the files. This process is done automatically when using a ScriptBundle or a St...

IPv4 To match IPv4 address format, you need to check for numbers [0-9]{1,3} three times {3} separated by periods \. and ending with another number. ^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$ This regular expression is too simple - if you want to it to be accurate, you need to check that the numbers are be...

This is the normal HTML table structure <style> table { width: 100%; } </style> <table> <tr> <td> I'm a table </td> </tr> </table> You can do same implementation like this <style> .table-...

A Stopwatch instance can measure elapsed time over several intervals with the total elapsed time being all individual intervals added together. This gives a reliable method of measuring elapsed time between two or more events. Stopwatch stopWatch = new Stopwatch(); stopWatch.Start(); double d =...

We're defining a robust version of a function that reads the HTML code from a given URL. Robust in the sense that we want it to handle situations where something either goes wrong (error) or not quite the way we planned it to (warning). The umbrella term for errors and warnings is condition Functio...

The simple answer, when asking how to use threads in Python is: "Don't. Use processes, instead." The multiprocessing module lets you create processes with similar syntax to creating threads, but I prefer using their convenient Pool object. Using the code that David Beazley first used to...

Cython is an alternative python interpreter. It uses the GIL, but lets you disable it. See their documentation As an example, using the code that David Beazley first used to show the dangers of threads against the GIL, we'll rewrite it using nogil: David Beazley's code that showed GIL threading ...

;Sends the keystroke for the letter "a" every 3 seconds. #Persistent SetTimer, SendLetterA, 3000 return SendLetterA() { Send, a }

This is an example of something that would have been straight up impossible with labels. If you execute the same label multiple times at the same time and they rely on variables that are being defined within them, they very likely interfere and cause unexpected behavior. Here is how to do it with f...

Consider the following example: type Company struct { Name string Location string } Hide/Skip Certain Fields To export Revenue and Sales, but hide them from encoding/decoding, use json:"-" or rename the variable to begin with a lowercase letter. Note that this prevents ...

Pipe operators are used to pass parameters to a function in a simple and elegant way. It allows to eliminate intermediate values and make function calls easier to read. In F#, there are two pipe operators: Forward (|>): Passing parameters from left to right let print message = print...

When you are programming in OpenGL or any other graphics api you will hit a brick wall when you are not that good in math. Here I will explain with example code how you can achieve movement/scaling and many other cool stuff with your 3d object. Let's take a real life case... You've made a awesome (...

By running the command stack install Stack will copy a executable file to the folder /Users/<yourusername>/.local/bin/

If we have this dictionary: set alpha {alice {items {}} bob {items {}} claudia {items {}} derek {items {}}} And want to add "fork" and "peanut" to Alice's items, this code won't work: dict lappend alpha alice items fork peanut dict get $alpha alice # => items {} items f...

There are two ways to register a background page in the extension manifest. The scripts property In the common case, a background page doesn't require any HTML markup. We can register these kinds of background pages using the scripts property. In this case, a background page will be generated...

The sort algorithm sorts a sequence defined by two iterators. This is enough to sort a built-in (also known as c-style) array. C++11 int arr1[] = {36, 24, 42, 60, 59}; // sort numbers in ascending order sort(std::begin(arr1), std::end(arr1)); // sort numbers in descending order sort(std::b...

The ref keyword is used to pass an Argument as Reference. out will do the same as ref but it does not require an assigned value by the caller prior to calling the function. Ref Parameter :-If you want to pass a variable as ref parameter then you need to initialize it before you pass it as ref param...

In Swift, memory management is done for you automatically using Automatic Reference Counting. (See Memory Management) Allocation is the process of reserving a spot in memory for an object, and in Swift understanding the performance of such requires some understanding of the heap and the stack. The h...

The lists form a monad. They have a monad instantiation equivalent to this one: instance Monad [] where return x = [x] xs >>= f = concat (map f xs) We can use them to emulate non-determinism in our computations. When we use xs >>= f, the function f :: a -> [b...

thinky is a lightweight node.js ORM for RethinkDB. First you need to have RethinkDB running on your server. Then install the thinky.io npm package into your project. npm install --save thinky Now import thinky into your model file. const thinky = require('thinky)(); const type = thinky.type ...