getOrSet<T> method
Gets the value for the specified key
or sets it using the builder
.
Example:
var foo = req.store.getOrSet<ExpensiveFoo>('foo', () => ExpensiveFoo());
Implementation
T getOrSet<T>(String key, T Function() builder) {
if (!_data.containsKey(key)) {
final value = builder();
set(key, value);
return value;
} else {
return get<T>(key);
}
}