void main() {
var s = num(7);
print("${s}");
}
Iterable num(n) sync*{
var k = 0;
while(k < n ) yield k++;
}
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You can use [html][/html], [css][/css], [php][/php] and more to embed the code. Urls are automatically hyperlinked. Line breaks and paragraphs are automatically generated.