isMixedCase method

bool isMixedCase()

Checks whether the String is consisted of both upper and lower case letters.

Example

String foo = 'Hello World';
bool isMixedCase = foo.isMixedCase; // returns true;

String foo = 'hello world';
bool isMixedCase = foo.isMixedCase; // returns false;

Implementation

bool isMixedCase() {
  if (this.isBlank) {
    return false;
  }
  return this!.toUpperCase() != this && this!.toLowerCase() != this;
}