Can I format a number before it is rendered in

Question

I am rendering a node in Flutter app something like:

We have total ${_summary[\'bookCount\']} books. 

_summ

Answer 1

In for loop you can try:

Text('Index ${i}'), //Index 0

Format with operation:

Text('Total: \$${price * quantity}'),  //$20

With Decimal point:

Text('\$${cart.totalAmount.toStringAsFixed(2)}'), //2.34