Flutter Builders And Dart Data Structures

Part of the mastering Flutter task is relating dart data structures to their use in making Flutter Application development easier. And quite frankly, some of you do not get it just yet. Is it happens, I have this nice, neat example to show you one of the relationships as Flutter Builders and Dart Data Structures.

Flutter Builders

Most of us are looking at Flutter Builders wrong, let me show you an example:

Just a simple list builder, we have seen this many times. Now let’s look at ListView.builder:

Now, that underscore of course is the keyword short-cut for context. Which in this case is a key with the value being the int index. Or, to put another way, in tech hardware we have an internet gateway that translates one internet protocol to another such as a router: