Referencing a fixed-size section: A slice is a reference to an existing array or a dynamic array that references a fixed-size section.
Does not own data:
Flexible: Slices can reference part of data structures such as arrays and dynamic albania whatsapp number data 5 million arrays, making data operations more flexible
First, a slice is a reference (similar to a pointer in C); it describes a subset of data in an existing array or dynamic array (of course, it can include all existing data). Note that a slice does not have a cap (capacity) because the content size of the slice has been determined since its creation and will not change; the capacity is used to reserve space for dynamic array expansion (to avoid frequent memory requests and data movement).
Secondly, if the slice is created based on an array or dynamic array, then the slice has an association with the data holder (this relationship may be maintained by the Rust runtime, which can be simply understood as a pointer to the original data); the Rust detector needs to confirm that the data referenced by the slice remains valid during the slice life cycle.
