Crate len_trait

This crate generalises traits over the len and capacity methods found in most collections.

Methods that are included:

• capacity
• clear
• is_empty
• len
• reserve_exact
• reserve
• shrink_to_fit
• split_at_mut
• split_at
• split_off
• truncate
• with_capacity

Additionally, the traits IndexRange<Idx> and IndexRangeMut<Idx> are provided for “consistent slicing,” i.e. slicing over all range types.

Modules

The len module provides:

• LenMut, which requires Clear
• Clear, which requires Len
• Len, which requires Empty
• Empty

The capacity module provides:

• CapacityMut, which requires WithCapacity
• WithCapacity, which requires Capacity
• Capacity, which requires Len.

The index module provides:

• IndexRange<Idx>, automatically implemented from Index<Idx>
• IndexRangeMut<Idx>, automatically implemented from IndexMut<Idx>
• SplitAt<Idx>, which requires IndexRange<Idx>
• SplitAtMut<Idx>, which requires IndexRangeMut<Idx>

Features

The alloc and std features offer different tiers of implementations for different collections. The std feature automatically enables alloc. Although the std feature is the default, disabling it will enable no_std.

Re-exports

• pub use capacity::*;
• pub use index::*;
• pub use len::*;

Modules

• capacity
  Traits involving the capacity of a collection.
• index
  Traits involving collections which index over a particular type.
• len
  Traits involving the length of a collection.