isUppercaseLetter function

bool isUppercaseLetter(
  1. String character
)

True when character is a single ASCII uppercase letter.

Implementation

bool isUppercaseLetter(String character) {
  if (character.length != 1) {
    return false;
  }
  final int codeUnit = character.codeUnitAt(0);
  return codeUnit >= _uppercaseA && codeUnit <= _uppercaseZ;
}