How to create our own metadata in Dart?

Question

I want to create some own metadata for my dart codem, e.g. @table, @column, but I can\'t find any useful documents about it.

But I do found there are some special me

Answer 1

• This is an interesting blog post about Dart annotations
  http://japhr.blogspot.co.at/2013/01/i-love-dart-annotations.html

• Here the meta data part of the Dart language specification
  https://www.dartlang.org/docs/spec/latest/dart-language-specification.html#h.d0rowtffuudf

Metadata consists of a series of annotations, each of which begin with the character @, followed a constant expression that starts with an identifier.

So you can use a class with a const constructor as annotation.

• Dart Up and Running https://www.dartlang.org/docs/dart-up-and-running/contents/ch02.html#ch02-metadata