# Escaping binding storage

Taking a local value's address and retaining it extends that value's storage lifetime.
Bindings introduced by guards, multiple declarations, loops, and channel receives follow
the same rule as ordinary local declarations. Each loop iteration has its own retained
value and index bindings.

Shadowing introduces a separate binding. Initializers read the incoming bindings before
the new declarations become visible, and leaving a scope restores the outer bindings.

Scalar and struct value captures keep a snapshot of the value at capture time, including
values whose local storage has moved to the heap. Mutable captures of these values update
that closure's snapshot. Mutable fixed-array captures share the original array's storage,
so writes on either side remain visible. Explicit pointer captures retain their pointer
identity.