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An anonymous, inlined function defined with lambda. The parameters of the lambda are defined to the left of the colon. The function body is defined to the right of the colon. The result of running the function body is (implicitly) returned. s=lambda x:x*x s(2) =>4

Map takes a function and a collection of items. It makes a new, empty collection, runs the function on each item in the original collection and inserts each return value into the new collection. It returns the new collection. This is a simple map that takes a list of names and returns a list of the...

webpack.config.js const webpack = require("webpack") const helpers = require('./helpers') const path = require("path") const WebpackNotifierPlugin = require('webpack-notifier'); module.exports = { // set entry point for your app module "entry": { ...

Detailed instructions on getting identityserver3 set up or installed.

Create a new bot in Azure following this documentation Login into Azure and from Intelligence + Analytics category, select Bot Service and provide required information. Enter the required details for the bot, they are identical to the required details of an App Service,for example App Name, Subs...

If you're in a hurry and want to quickly get a speed boost PLUS save some power, go into Power Save Mode. It's in the File menu, bottom-most option in that menu. File -> Power Save Mode Note: this will disable some powerful features like syntax highlighting, code analysis, auto-completing thing...

let label = UILabel.init(frame: CGRect(x: 0, y:0, width: 100, height: 40)) label.backgroundColor = .lightGray let attributedString = NSMutableAttributedString.init(string: "Apply UnderLining") attributedString.addAttribute(NSUnderlineStyleAttributeName, value: 1, range: NSRange.init...

Simply add an attribute to the controller action [Route("product/{productId}/customer")] public IQueryable<Product> GetProductsByCustomer(int productId) { //action code goes here } this will be queried as /product/1/customer and productId=1 will be sent to the controll...

//Header File <CallKit/CXCallObserver.h> CXCallObserver *callObserver = [[CXCallObserver alloc] init]; // If queue is nil, then callbacks will be performed on main queue [callObserver setDelegate:self queue:nil]; // Don't forget to store reference to callObserver, to prevent it ...

Unit testing in ionic is the same as in any angular app. We'll be using a few frameworks to do this. Karma - a framework for running tests Jasmine - a framework for writing tests PhantomJS - an application that runs javascript without a browser First of all lets install everything, so make sure...

Using find() const inventory = [ {name: 'apples', quantity: 2}, {name: 'bananas', quantity: 0}, {name: 'cherries', quantity: 5} ]; function findCherries(fruit) { return fruit.name === 'cherries'; } inventory.find(findCherries); // { name: 'cherries', quantity: 5 } /*...

Everything in Python is an object. Each object has some special internal methods which it uses to interact with other objects. Generally, these methods follow the __action__ naming convention. Collectively, this is termed as the Python Data Model. You can overload any of these methods. This is comm...

HTMLUnitDriver HTMLUnitDriver is the most lightweight implementation of headless(GUI-less) browser for Webdriver based on HtmlUnit. It models HTML documents and provides an API that allows you to invoke pages, fill out forms, click links, etc. just like you do in your normal browser. It supports J...

A way to create a list is to place elements in two square brackets, separated by semicolons. The elements must have the same type. Example: > let integers = [1; 2; 45; -1];; val integers : int list = [1; 2; 45; -1] > let floats = [10.7; 2.0; 45.3; -1.05];; val floats : float list = [1...

Changing the order (or position) was possible in Bootstrap 3 using the push pull classes. In Bootstrap 4, the push pull classes still work, and additionally flexbox order can be used. In Bootstrap 4, the push pull classes are now push-{viewport}-{units} and pull-{viewport}-{units} and the xs- infix...

Given that the data directory of the server is empty: The server is initialized. SSL certificate and key files are generated in the data directory. The validate_password plugin is installed and enabled. The superuser account 'root'@'localhost' is created. The password for the superuser is set ...

To reveal the default "root" password: shell> sudo grep 'temporary password' /var/log/mysqld.log Change the root password as soon as possible by logging in with the generated temporary password and set a custom password for the superuser account: shell> mysql -uroot -p mysql...

It is a good practice to add comments that describe the code. It is helpful for others and even for the coder when returned later. A single line can be commented using the % symbol or using the shortkey Ctrl+R. To uncomment a previously commented line remove the % symbol or use shortkey Crtl+T. W...

Keychain allows to save items with special SecAccessControl attribute which will allow to get item from Keychain only after user will be authenticated with Touch ID (or passcode if such fallback is allowed). App is only notified whether the authentication was successful or not, whole UI is managed b...