nullable
Nullable A wrapper type for handling optional values. Nullable<T> is a wrapper type that can either contain a value stored in a Box<T> or be null. It provides a safe way to handle optional values without the risk of dereferencing null pointers. This makes it particularly useful in dictionaries that store complex data structures that don't implement the Felt252DictValue trait; instead, they can be wrapped inside a Nullable. # Examples Basic usage:
let value: Nullable<u32> = NullableTrait::new(10);
let unwrapped_value = value.deref();
Handling null values:
let null_value: Nullable<u32> = Default::default();
let unwrapped_value = null_value.deref_or(1);
Checking if the value is null:
let value: Nullable<u32> = NullableTrait::new(10);
let is_null = if value.is_null() {
// Handle null case
} else {
// Handle non-null case
};
Fully qualified path: core::nullable