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JavaScript ES6 Modules

on April 17, 2020

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Differences Between Var, Let, and Const

var global scope can be reassigned allows hoisting let block scope cannot be reassigned does not hoist let allows us to change the values, eg. it is used inside loop. const block scope cannot be reassigned does not hoist - we cannot change const or reassign variable, but const allows you to change the properties of an object, if it is an object. - const only allows changing the values of its properties, but does not allow to re-declaring the variable. - recommend to use const -

Flutter Tutorial

How to install flutter on windows https://flutter.dev/docs/get-started/install/windows Create a src directory in c: drive because C:\Program Files reqyuires extra privileges. C :\src> git clone https://github.com/flutter/flutter.git -b stable Once installed, go to the installed directory and double click the flutter_console.bat file. This will take you to flutter console. Type flutter doctor, which is a diagnostic tool. C :\src\flutter>flutter doctor To access flutter globally, add the flutter installation path to environment PATH variables. Flutter uses programming language 'Dart'. DART is a statically typed programming language. Once a variable is declared as string, it cannot be assigned an integer value. For example: String name = 'abc'; later if we give name the value of 30, it will give error 'type 'int' can't be assigned to a variable of type 'String'. Dart - functions Below is dynamic variable, which we should never use. ...

When and how to use load balance

Load balancing is a technique used to distribute workloads across multiple servers, networks, or other computing resources, in order to optimize resource utilization, increase throughput, and improve reliability. Load balancing can be used in a variety of scenarios, including: To distribute incoming network traffic across multiple servers, in order to prevent any single server from becoming a bottleneck and ensure high availability. To distribute computational workloads across multiple processors or cores, in order to improve performance and efficiency. To distribute database workloads across multiple database servers, in order to improve performance and reliability. There are several different algorithms and strategies that can be used for load balancing, including: Round Robin: Requests are distributed in a cyclical manner to each server in turn. Least Connections: The server with the fewest current connections is chosen. ...

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JavaScript ES6 Modules

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