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iex(1)> [x, y] = ["String1", "String2"] iex(2)> "#{x} #{y}" # "String1 String2"

Instead of invoking the Angular’s bootstrap code directly, wrap the bootstrap code into a function and export the function. This function can also accept parameters. import { platformBrowserDynamic } from "@angular/platform-browser-dynamic"; import { AppModule } from "./src/app&quot...

In android, every developer uses Anonymous Class (Runnable) at least once in a project. Any Anonymous Class has a reference to its parent (activity). If we perform a long-running task, the parent activity will not be destroyed until the task is ended. Example uses handler and Anonymous Runnable cla...

Sometimes you would want to start or remove an action on a specific node at a certain time. For example, you might want to stop a moving object when the user taps the screen. This becomes very helpful when a node has multiple actions and you only wants to access one of them. let move = SKAction.mov...

Objectives: Using the Spring CLI, we will create a new Spring Boot application to be deployed to Elastic Beanstalk. We will edit the generated Spring Boot application so that it will: Create a jar named aws-eb-demo.jar. Listen on port 5000. Include a single web page named index.html. ...

Code <picture> <source media="(min-width: 600px)" srcset="large_image.jpg"> <source media="(min-width: 450px)" srcset="small_image.jpg"> <img src="default_image.jpg" style="width:auto;"> </picture> ...

Create enum of custom errors enum RegistrationError: Error { case invalidEmail case invalidPassword case invalidPhoneNumber } Create extension of RegistrationError to handle the Localized description. extension RegistrationError: LocalizedError { public var errorDescription...

Return JSON formated response: use Symfony\Component\HttpFoundation\JsonResponse; public function someAction(){ // Action's code $data = array( // Array data ); return new JsonResponse($data); }

Sometimes, we want some fields in the JSON string to be optional. For example, data Person = Person { firstName :: Text , lastName :: Text , age :: Maybe Int } This can be achieved by import Data.Aeson.TH $(deriveJSON ...

The expiration values of a key can be managed by a user outside of the update commands. Redis allows a user to determine the current time to live (TTL) of a key using the TTL command: TTL key This command will return the TTL of a key in seconds or will return the special values -1 or -2. A -1 ...

wire d = 1'bx; // say from previous block. Will be 1 or 0 in hardware if (d == 1'b) // false in simulation. May be true of false in hardware

Simple Hello World Application: using System; namespace HelloWorld { class Program { static void Main(string[] args) { Console.WriteLine("Hello World"); } } } Equivalent IL Code (which will be JIT compiled) // Microsoft (R) ...

It is possible to use integer variables with latex. To create a new variable we need the \newcounter{name} command, where name is the name of the new counter. The name must contain only letters. This command creates a new one with name \thename. With this command we can print name variable onto the ...

Completion can be used to match words used in a document. When typing a word, Ctrlp or Ctrln will match previous or next similar words in the document. This can even be combined with Ctrl-X mode to complete entire lines. For instance type something like: This is an example sentence. then go to ...

package com.test.ws.example; import javax.xml.soap.MessageFactory; import javax.xml.soap.MimeHeaders; import javax.xml.soap.SOAPBody; import javax.xml.soap.SOAPConnection; import javax.xml.soap.SOAPConnectionFactory; import javax.xml.soap.SOAPElement; import javax.xml.soap.SOAPEnve...

This example shows how to use mathematical operations with counters. It may be useful for loops in latex. Addition: \addtocounter{num}{n} this command adds n to num, where num is a counter and n is a positive integer. Subtraction: \addtocounter{num}{-n} this command subtracts n from num, where n...

There are certain principles that apply to optimization in any computer language, and Python is no exception. Don't optimize as you go: Write your program without regard to possible optimizations, concentrating instead on making sure that the code is clean, correct, and understandable. If it's too...

Nested for loops may be used to iterate over a number of unique iterables. result = [] for a = iterable_a for b = iterable_b push!(result, expression) end end Similarly, multiple iteration specifications may be supplied to an array comprehension. [expression for a = iterabl...

Generator comprehensions follow a similar format to array comprehensions, but use parentheses () instead of square brackets []. (expression for element = iterable) Such an expression returns a Generator object. julia> (x^2 for x = 1:5) Base.Generator{UnitRange{Int64},##1#2}(#1,1:5) Fun...

A semicolon separates just two commands. echo "i am first" ; echo "i am second" ; echo " i am third"