How do I use collection for-loops in Flutter?

Question

I am trying to add widgets in a SliverList using a for-loop.
But I get the following error:

error: The element type \'Se

Answer 1

The problem here is that the collection for operator does not take curly braces ({}). i.e. they do not work with them as you can tell.
Curly braces are used for Set and Map literals. If you add a colon behind an entry, it becomes a Map literal, e.g. { 'flavor': 'sweet' }. However, if you just use curly braces, it creates a Set. Usually this does not affect for-loops because curly braces are used as regular flow control.

Anyways, to fix the issue you simply need to remove your curly braces:

for(var i = 0; i < 5; i++) EachBusInfoBodyWidget(Colors.green)