Null safety

Null safety prevents errors that result from unintentional access of variables set to null. buzz will require you to declare any nullable value with a ?.

final aStringOrNull: str? = "hello";

It'll also require you to check for null before accessing the value. This reduces greatly any runtime error related to nullable values. The language provides some useful tools to do so with minimal effort.

// Null coalescing operator is `??`
final unwrapped: str = aStringOrNull ?? "default value"

// Force unwrapping with `!`
final unwrapped: str = aStringOrNull!;

// Graceful unwrapping
final optList: [int]? = null;

std\print(optList?.len()); // -> null

// If unwrap
if (aStringOrNull -> aString) {
    std\print("{aString} is not null");
} else {
    std\print("aString was null");
}