Struct std::heap::Excess  
                   
                       [−]
                   
               [src]
pub struct Excess(pub *mut u8, pub usize);
🔬 This is a nightly-only experimental API.  (allocator_api #32838)
the precise API and guarantees it provides may be tweaked slightly, especially to possibly take into account the types being stored to make room for a future tracing garbage collector
Represents the combination of a starting address and a total capacity of the returned block.