August 2022
Beginner
912 pages
19h 57m
English
Content preview from Coding All-in-One For Dummies, 2nd Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 7
Interacting with the User
IN THIS CHAPTER
Collecting responses from the user
Responding to input
Dealing with null values
Advice on love and marriage
Love is in the air! The sun is shining. The birds are singing. Hearts are all a-Flutter. (Pun intended.)
Doris D. Developer wants to find a mate, and she has two important criteria. First, she wants someone who's 18 or older. Second, she's looking for someone who loves developing Flutter apps. What better way for Doris to achieve her goal than for her to write her own dating app?
This chapter covers Doris's outstanding work. To create the app, Doris uses several kinds of widgets: a text field, a slider, a drop-down button, and some others. A widget of this kind — one that the user sees and interacts with — is called a control element, or simply a control.
Doris's app also has some layout widgets, such as Center, Row, and Column, but these layout widgets aren't called controls. The user doesn't really see them and certainly doesn't interact with them. This chapter's emphasis is on the controls, not on the layout widgets or ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.