ThinhPhan · August 18, 2015 10:35
diff --git a/check-string-empty.m b/check-string-empty.m
 // 'Nothing' in Objective-C have a lot of meaning.
 //	Read [nil / Nil / NULL / NSNull] http://nshipster.com/nil/
 // With string, nothing can be nil or "" - empty string.

 // Bad
 if ([string isEqualToString:@""] && password == nil) {
 }

 // Good - Simple check 'length' for both conditions above.
 if ([string length] == 0) {
 }
	// 'Nothing' in Objective-C have a lot of meaning.
	// Read [nil / Nil / NULL / NSNull] http://nshipster.com/nil/
	// With string, nothing can be nil or "" - empty string.

	// Bad
	if ([string isEqualToString:@""] && password == nil) {
	}

	// Good - Simple check 'length' for both conditions above.
	if ([string length] == 0) {
	}