How to compare String with case insensitivity, in Dart?

Question

How do I compare two string in Dart, with case insensitivity?

For example, I have this list:

var list = ['Banana', 'apple']; 

And I would like to sort it such that apple is before Banana.

End result:

['apple', 'Banana']; 

Answer 1

There's no built in way to compare strings case-insensitive in dart (as @lrn answered).

If you only want to compare strings case-insensitive, I would go with declaring the following method somewhere in a common place:

bool equalsIgnoreCase(String string1, String string2) {   return string1?.toLowerCase() == string2?.toLowerCase(); } 

Example:

equalsIgnoreCase("ABC", "abc"); // -> true equalsIgnoreCase("123" "abc");  // -> false equalsIgnoreCase(null, "abc");  // -> false equalsIgnoreCase(null, null);   // -> true