mcnullable_extensions

A collection of extension methods to do less foo != null and more foo.isNotNull.

Usage - non-exhaustive list

T?

• isNull
• isNotNull
• or('backup')

// isNull
expect(null.isNull, isTrue);

String? string;
expect(string.isNull, isTrue);

int? i;
expect(i.isNull, isTrue);

DumbCat? dumbCat;
expect(dumbCat.isNull, isTrue);

// isNotNull
num? n;
expect(n.isNotNull, isFalse);
num? n2 = 9;
expect(n2.isNotNull, isTrue);

DumbCat? dumbCat;
expect(dumbCat.isNotNull, isFalse);

// or
String? string;
expect(string.or('backup'), 'backup');

String?

• isNullOrEmpty
• isNotNullOrEmpty
• orEmptyString

// isNullOrEmpty
String? string;
expect(string.isNullOrEmpty, isTrue);

string = '';
expect(string.isNullOrEmpty, isTrue);

// orEmptyString
String? string;
expect(string.orEmptyString, '');

// isNotNullOrEmpty
String? string;
expect(string.isNotNullOrEmpty, isFalse);
expect(''.isNotNullOrEmpty, isFalse);

expect('words'.isNotNullOrEmpty, isTrue);
string = 'Hello Dart!';
expect(string.isNotNullOrEmpty, isTrue);