pub trait Resize { // Required method fn resize(&mut self, len: usize); }
A trait for storage types which are known to have the capability to increase their capacity.
Resize a storage type. Must work for any value of len, however it’s okay if after this method self.alloc_len() > len or in words: It’s okay if the method allocates more memory than specified in the parameter.
len
self.alloc_len() > len