Food Delivery App 15 - Managing Dishes in Cart with Quantity and Price

-

 

Comments

Post a Comment

Popular posts from this blog

Introduction to Kotlin

-
Kotlin is a compiled, statically typed language, which might provide some initial hurdles for people who are used to the interpreted, dynamically typed Python. This document aims to explain a substantial portion of Kotlin's syntax and concepts in terms of how they compare to corresponding concepts in Python. Kotlin can be compiled for several different platforms. In this document, we assume that the target platform is the Java virtual machine, which grants some extra capabilities - in particular, your code will be compiled to Java bytecode and will therefore be interoperable with the large ecosystem of Java libraries. Even if you don't know Python, this document should hopefully be a useful introduction to Kotlin, in particular if you are used to other dynamically typed languages. However, if you're coming from a Java background, you're probably better off diving directly into the excellent official docs (from which this doc has drawn a lot of i...
Read more

Flutter: Statefull vs Stateless widget

-
Image
  What is the difference between Stateful and Stateless Widget. In Flutter all the UI components are known as widgets. The widget which contains the code for a single screen of the app can be just of two types — Stateful Stateless Stateless Stateless widgets do not require mutable state, i.e., it is immutable . In simple words, Stateless widgets cannot change their state during the runtime of the app, which means the widgets cannot be redrawn while the app is in action. The structure of a Stateless widget looks like this: So, let’s understand what is there in this small code snippet. The name of this Stateless Widget is “ StartScreen ”, inside which we have to override the “ build” method. This build method takes in a “ BuildContext ” as the parameter and returns a widget. That’s why you can see that the return type of the build method is a widget. And this the place where you can design the UI of this screen, which is Stateless. In Stateless widget, The “ build ” method ca...
Read more

Flutter: MultiThreading, async await

-
Image
  Exploring Threading In Flutter Isolates At the point when Dart starts, there will be one main Isolate (Thread). It is the original main executing thread of the application, alluded to as the UI Thread. Isolates are: Dart’s version of Threads. Isolate memory isn’t shared with each other. Utilizations Ports and Messages to convey between them. May utilize another processor core if accessible. Runs code in parallel.     Future with Async & Await An async and await keywords you may use in Dart, towards a Future. When running async code: It runs in the equivalent Isolate (Thread) that began it. Runs simultaneously (not parallel) at the same time as other code, in the equivalent Isolate (Thread). It is significant, in that it does not block other code from running in a similar thread. Particularly substantial when you are in the main UI Thread. It will generally help keep your UI smooth while dealing with many events occurring in your code. Future A Future repres...
Read more