Tutorial by Examples: e

Examine the following strings: foobarfoo bar foobar barfoo the regular expression bar will match all four strings, \bbar\b will only match the 2nd, bar\b will be able to match the 2nd and 3rd strings, and \bbar will match the 2nd and 4th strings.

JSFiddle: https://jsfiddle.net/UnsungHero97/80qod7aL/5/ HTML <div class="box_shadow"></div> CSS .box_shadow { width: 100px; height: 100px; margin: 100px; box-shadow: -52px -52px 0px 0px #f65314, 52px -52px 0px 0px #7cbb00, -52px 52px 0px 0px #00...

virtual and override The virtual keyword allows a method, property, indexer or event to be overridden by derived classes and present polymorphic behavior. (Members are non-virtual by default in C#) public class BaseClass { public virtual void Foo() { Console.WriteLine("Foo...

A recursive function is simply a function, that would call itself. function factorial (n) { if (n <= 1) { return 1; } return n * factorial(n - 1); } The above function shows a basic example of how to perform a recursive function to return a factorial. Another...

import locale locale.setlocale(locale.LC_ALL, '') Out[2]: 'English_United States.1252' locale.currency(762559748.49) Out[3]: '$762559748.49' locale.currency(762559748.49, grouping=True) Out[4]: '$762,559,748.49'

First of all, we need to add our first Fragment at the beginning, we should do it in the onCreate() method of our Activity: if (null == savedInstanceState) { getSupportFragmentManager().beginTransaction() .addToBackStack("fragmentA") .replace(R.id.container, FragmentA.n...

Python 2.x2.7 "1deadbeef3".decode('hex') # Out: '\x1d\xea\xdb\xee\xf3' '\x1d\xea\xdb\xee\xf3'.encode('hex') # Out: 1deadbeef3 Python 3.x3.0 "1deadbeef3".decode('hex') # Traceback (most recent call last): # File "<stdin>", line 1, in <module> ...

Detailed instructions on getting razor set up or installed.

So let's suppose you want to iterate only between some specific lines of a file You can make use of itertools for that import itertools with open('myfile.txt', 'r') as f: for line in itertools.islice(f, 12, 30): # do something here This will read through the lines 13 to 20 as i...

You can use flatMap(_:) in a similar manner to map(_:) in order to create an array by applying a transform to a sequence's elements. extension SequenceType { public func flatMap<T>(@noescape transform: (Self.Generator.Element) throws -> T?) rethrows -> [T] } The difference with...

sed -i s/"what to replace"/"with what to replace"/g $file We use -i to select in-place editing on the $file file. In some systems it is required to add suffix after -i flag which will be used to create backup of original file. You can add empty string like -i '' to omit the b...

Aggregate Applies an accumulator function over a sequence. int[] intList = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; int sum = intList.Aggregate((prevSum, current) => prevSum + current); // sum = 55 At the first step prevSum = 1 At the second prevSum = prevSum(at the first step) + 2 At the i-t...

ansible -i hosts -m ping targethost -i hosts defines the path to inventory file targethost is the name of the host in the hosts file

Inventory is the Ansible way to track all the systems in your infrastructure. Here is a simple static inventory file containing a single system and the login credentials for Ansible. [targethost] 192.168.1.1 ansible_user=mrtuovinen ansible_ssh_pass=PassW0rd Write these lines for example to host...

Define interface //In this interface, you can define messages, which will be send to owner. public interface MyCustomListener { //In this case we have two messages, //the first that is sent when the process is successful. void onSuccess(List<Bitmap> bitmapList); //And Th...

Returns a random integer between min and max: function randomBetween(min, max) { return Math.floor(Math.random() * (max - min + 1) + min); } Examples: // randomBetween(0, 10); Math.floor(Math.random() * 11); // randomBetween(1, 10); Math.floor(Math.random() * 10) + 1; // randomBet...

Here's how you can destructure a vector: (def my-vec [1 2 3]) Then, for example within a let block, you can extract values from the vector very succinctly as follows: (let [[x y] my-vec] (println "first element:" x ", second element: " y)) ;; first element: 1 , second ele...

Here's how you can destructure a map: (def my-map {:a 1 :b 2 :c 3}) Then, for example, within a let block you can extract values from the map very succinctly as follows: (let [{x :a y :c} my-map] (println ":a val:" x ", :c val: " y)) ;; :a val: 1 , :c val: 3 Notice th...

Let's say you have a vector like so: (def my-vec [1 2 3 4 5 6]) And you want to extract the first 3 elements and get the remaining elements as a sequence. This can be done as follows: (let [[x y z & remaining] my-vec] (println "first:" x ", second:" y "third:&quot...

Swift textField.textAlignment = .Center Objective-C [textField setTextAlignment: NSTextAlignmentCenter]; In the example, we have set the NSTextAlignment to center. You can also set to .Left, .Right, .Justified and .Natural. .Natural is the default alignment for the current localization. Th...