Yoav Reisler

1606457296

Swift Programming Basics: View Update Lifecycle, Variables and Constants

In this lesson, you’ll learn about the app lifecycle which includes retrieving and processing data, rendering the UI and handling user interaction. More importantly, you’ll see how Swift code puts this cycle in motion and keeps it going.
You’ve already seen what Swift code for the user interface looks like. In this lesson, you’ll begin to learn how Swift code is used to keep track of the data in your app!

⏱ Time Stamps ⏱
00:00 Intro
01:03 The View Lifecycle of an App (Diagram)
03:00 What is an Xcode Playground?
04:43 What does data look like?
04:54 Swift String
05:05 A Comment
05:32 Swift Int
05:43 Swift Double
05:55 Swift Bool
06:26 How to keep track of data?
06:38 The var keyword (variable)
08:17 The print( ) function
12:29 The let keyword (constant)
13:59 Conclusion

#swift #mobile-apps

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Swift Programming Basics: View Update Lifecycle, Variables and Constants
Houston  Sipes

Houston Sipes

1600430400

10 Free Online Resources To Learn Swift Language

Swift is a fast and efficient general-purpose programming language that provides real-time feedback and can be seamlessly incorporated into existing Objective-C code. This is why developers are able to write safer, more reliable code while saving time. It aims to be the best language that can be used for various purposes ranging from systems programming to mobile as well as desktop apps and scaling up to cloud services.

Below here, we list down the 10 best online resources to learn Swift language.

(The list is in no particular order)

#developers corner #free online resources to learn swift language #learn swift #learn swift free #learn swift online free #resources to learn swift #swift language #swift programming

Yoav Reisler

1606457296

Swift Programming Basics: View Update Lifecycle, Variables and Constants

In this lesson, you’ll learn about the app lifecycle which includes retrieving and processing data, rendering the UI and handling user interaction. More importantly, you’ll see how Swift code puts this cycle in motion and keeps it going.
You’ve already seen what Swift code for the user interface looks like. In this lesson, you’ll begin to learn how Swift code is used to keep track of the data in your app!

⏱ Time Stamps ⏱
00:00 Intro
01:03 The View Lifecycle of an App (Diagram)
03:00 What is an Xcode Playground?
04:43 What does data look like?
04:54 Swift String
05:05 A Comment
05:32 Swift Int
05:43 Swift Double
05:55 Swift Bool
06:26 How to keep track of data?
06:38 The var keyword (variable)
08:17 The print( ) function
12:29 The let keyword (constant)
13:59 Conclusion

#swift #mobile-apps

August  Larson

August Larson

1624945440

Basic Variable Types in Python

This written lesson is part of Banana Chip Tech’s Python Crash Course. For video lectures, programming homework assignments, and other content please visit our website.

Variables are ways that we can store information for use later on in a program. For this reason, they are incredibly helpful when programming. The way that I like to think about variables are like jars where we can stuff information in and then take information out later. A good real world example of what a variable does can be found in food containers. The food container itself would be the variable and the food that it holds would be the data that a variable would hold. For instance, we can store some peanut butter in our peanut butter jar. We can then take our peanut butter out of the jar and use it when we want to make our peanut butter and jelly sandwich. Similarly, we can have a pizza box which is holding our pizza. Later on when we are hungry, we can take out a piece of pizza and eat it. Both the peanut butter jar and pizza box act as storage containers, but _what _they store is different. All python variables store information, but the type of information that they store differs.

While python doesn’t force you to document what specific type of variable you’re going to be using, knowing the type of variable used can be critical for the success of your program. I like to classify python variables into two distinct types: basic variable types and data structure variable types. In this tutorial, we talk about the different basic variable types.

Basic variable types contain only a single piece of information. These basic variable types are like our peanut butter jar that only stores peanut butter. We can’t store cheese or bread in our peanut butter jar; we can only store peanut butter!

The first basic variable type that we will discuss is the integer (int). Ints are whole numbers that don’t have a decimal. They can be positive or negative as long as they don’t have a decimal. The following code provides a demonstration of creating an int. Notice that the equal sign is used to assign the value 3 to the variable named myint. For simplicity sake, I recommend using only letters and underscores in your variable names. Avoid using any keywords (ie: for, in, while, if, etc) in your variable names. Following these recommendations will help you avoid any invalid variable names!

#variables-in-python #python3 #python #programming #variables #basic variable types in python

Top Swift Development Companies | Top Swift Developers - TopDevelopers.co

A thoroughly researched list of top Swift developers with ratings & reviews to help find the best Swift development companies around the world.

#swift development service providers #best swift development companies #top swift development companies #swift development solutions #top swift developers #swift

Hire Dedicated Swift Developers

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