Using if-else in build method

Question

How can I use if-else construction in build method? Now I use double if:

if (_rapport.isNotEmpty && _rapport.length == 3)
  Container(
    child: Text(_rapport),
  ),
if (_rapport.isEmpty || _rapport.length != 3)
  const Text('wrong input'),

while using else brings the error:

Did you try to remove the const ?

Steve
– Steve

2019-12-22 10:24:51 +00:00
Commented Dec 22, 2019 at 10:24 — Steve
– Steve, Commented Dec 22, 2019 at 10:24

tvl · Accepted Answer · 2019-12-22 10:18:00Z

2

You can use a ternary if-statement. condition ? true : false;

With context: 5 > 1 ? print("this will be printed") : print("this won't be printed");

https://medium.com/run-dart/dart-dartlang-introduction-if-else-conditional-statement-1350a56e2e98?

answered Dec 22, 2019 at 10:18

tvl

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