Creating a program to create a simple dart file - dart

Question

Let's say we want to create a simple dart file, that just declares a class containing consts. E.g.
class StringNames {
static const String helloWorld = 'Hello World';
}
But rather than write this manually, we want to generate this file programmatically. We want a program that will create this file for us.
We could write such a program in dart itself, e.g.
import 'dart:io';
void main() {
final f1 = 'file1.dart';
File(f1).writeAsString('class stringNames {\nstatic const String helloWorld = \'HelloWorld\';\n}');
}
Naturally this feels wrong. Is there a better way to achieve this?

Answer 1

You could use multi-line string as described here in the Dart language tour:
https://dart.dev/guides/language/language-tour#strings
So your example becomes like this, which is much more readable:
import 'dart:io';
void main() {
final f1 = 'file1.dart';
File(f1).writeAsString('''
class StringNames {
static const String helloWorld = 'Hello World';
}
''');
}
You can also use this and insert values from variables inside the string like this:
import 'dart:io';
void main() {
final f1 = 'file1.dart';
final someValue = 42;
File(f1).writeAsString('''
class StringNames {
static const String helloWorld = 'Hello World';
static const int someValue = $someValue;
}
''');
}