# papill9/mitsein architecture

> Architecture diagram of the GitHub repository papill9/mitsein, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-12). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/papill9/mitsein
- Repository: https://github.com/papill9/mitsein

## Overview

Mitsein is a Rust library for non-empty collection and view APIs. The principal workflow is a consumer using the crate’s public facade to construct a non-empty value, then use its type-specific operations and non-empty iterators or subset views while retaining the cardinality guarantee. The graph preserves the documented collection families and optional serialization support. Connections between modules are limited to references visible in the source index or excerpts; unsampled implementation details are not inferred.

Main entry points: [`src/lib.rs`](https://github.com/papill9/mitsein/blob/master/src/lib.rs) (Crate Facade), [`src/slice1.rs`](https://github.com/papill9/mitsein/blob/master/src/slice1.rs) (Nonempty Slices), [`src/iter1.rs`](https://github.com/papill9/mitsein/blob/master/src/iter1.rs) (Nonempty Iterators), [`src/vec1.rs`](https://github.com/papill9/mitsein/blob/master/src/vec1.rs) (Nonempty Vectors)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_facade["Public API"]
  node_api["Crate Facade<br/>[lib.rs]"]
end

subgraph group_collections["Collection Types"]
  node_array["Nonempty Arrays<br/>[array1.rs]"]
  node_vec["Nonempty Vectors<br/>[vec1.rs]"]
  node_deque["Nonempty Deques<br/>[vec_deque1.rs]"]
  node_btree_map["BTree Maps<br/>[btree_map1.rs]"]
  node_btree_set["BTree Sets<br/>[btree_set1.rs]"]
  node_hash_set["Hash Sets<br/>[hash_set1.rs]"]
  node_index_map["Index Maps<br/>[index_map1.rs]"]
  node_index_set["Index Sets<br/>[index_set1.rs]"]
  node_array_vec["ArrayVec Types<br/>[array_vec1.rs]"]
  node_heapless["Heapless Vectors<br/>[vec1.rs]"]
  node_small_vec["Small Vectors<br/>[small_vec1.rs]"]
  node_boxed["Boxed Types<br/>[boxed1.rs]"]
  node_strings["Nonempty Strings<br/>[string1.rs]"]
end

subgraph group_views["Views And Iteration"]
  node_slices["Nonempty Slices<br/>[slice1.rs]"]
  node_str_view["String Views<br/>[str1.rs]"]
  node_borrow["Borrowed And Cow<br/>[borrow1.rs]"]
  node_ranges["Nonempty Ranges<br/>[range1.rs]"]
  node_iter["Nonempty Iterators<br/>[iter1.rs]"]
  node_subsets["Subset Views"]
end

subgraph group_invariants["Safety And Integrations"]
  node_comparison["Comparison Helpers<br/>[cmp.rs]"]
  node_hashing["Hash Helpers<br/>[hash.rs]"]
  node_safety["Invariant Checks<br/>[mod.rs]"]
  node_serde["Serde Support<br/>[serde.rs]"]
end

node_consumer(("Library Consumer"))

node_consumer -->|"uses"| node_api
node_api -->|"exports"| node_array
node_api -->|"exports"| node_vec
node_api -->|"exports"| node_deque
node_api -->|"exports"| node_btree_map
node_api -->|"exports"| node_btree_set
node_api -->|"exports"| node_hash_set
node_api -->|"exports"| node_index_map
node_api -->|"exports"| node_index_set
node_api -->|"exports"| node_array_vec
node_api -->|"exports"| node_heapless
node_api -->|"exports"| node_small_vec
node_api -->|"exports"| node_boxed
node_api -->|"exports"| node_strings
node_api -->|"exports"| node_slices
node_api -->|"exports"| node_str_view
node_api -->|"exports"| node_borrow
node_api -->|"exports"| node_ranges
node_api -->|"exports"| node_iter
node_api -->|"exports"| node_subsets
node_api -->|"exports"| node_safety
node_api -->|"exports"| node_serde
node_array -->|"views as"| node_slices
node_slices -->|"provides iterators"| node_iter
node_vec -->|"exposes views"| node_slices
node_vec -->|"supports subsets"| node_subsets
node_vec -->|"uses conversions"| node_iter
node_str_view -->|"provides iterators"| node_iter
node_strings -->|"exposes views"| node_str_view
node_strings -->|"uses conversions"| node_iter
node_btree_set -->|"supports subsets"| node_subsets
node_hash_set -->|"supports subsets"| node_subsets
node_safety -->|"checks invariants"| node_slices
node_serde -->|"implements serialization"| node_btree_map

click node_api "https://github.com/papill9/mitsein/blob/master/src/lib.rs"
click node_array "https://github.com/papill9/mitsein/blob/master/src/array1.rs"
click node_vec "https://github.com/papill9/mitsein/blob/master/src/vec1.rs"
click node_deque "https://github.com/papill9/mitsein/blob/master/src/vec_deque1.rs"
click node_btree_map "https://github.com/papill9/mitsein/blob/master/src/btree_map1.rs"
click node_btree_set "https://github.com/papill9/mitsein/blob/master/src/btree_set1.rs"
click node_hash_set "https://github.com/papill9/mitsein/blob/master/src/hash_set1.rs"
click node_index_map "https://github.com/papill9/mitsein/blob/master/src/index_map1.rs"
click node_index_set "https://github.com/papill9/mitsein/blob/master/src/index_set1.rs"
click node_array_vec "https://github.com/papill9/mitsein/blob/master/src/array_vec1.rs"
click node_heapless "https://github.com/papill9/mitsein/blob/master/src/heapless/vec1.rs"
click node_small_vec "https://github.com/papill9/mitsein/blob/master/src/small_vec1.rs"
click node_boxed "https://github.com/papill9/mitsein/blob/master/src/boxed1.rs"
click node_strings "https://github.com/papill9/mitsein/blob/master/src/string1.rs"
click node_slices "https://github.com/papill9/mitsein/blob/master/src/slice1.rs"
click node_str_view "https://github.com/papill9/mitsein/blob/master/src/str1.rs"
click node_borrow "https://github.com/papill9/mitsein/blob/master/src/borrow1.rs"
click node_ranges "https://github.com/papill9/mitsein/blob/master/src/range1.rs"
click node_iter "https://github.com/papill9/mitsein/blob/master/src/iter1.rs"
click node_subsets "https://github.com/papill9/mitsein/tree/master/src/subset"
click node_comparison "https://github.com/papill9/mitsein/blob/master/src/cmp.rs"
click node_hashing "https://github.com/papill9/mitsein/blob/master/src/hash.rs"
click node_safety "https://github.com/papill9/mitsein/blob/master/src/safety/mod.rs"
click node_serde "https://github.com/papill9/mitsein/blob/master/src/serde.rs"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_api toneBlue
class node_array,node_vec,node_deque,node_btree_map,node_btree_set,node_hash_set,node_index_map,node_index_set,node_array_vec,node_heapless,node_small_vec,node_boxed,node_strings toneAmber
class node_slices,node_str_view,node_borrow,node_ranges,node_iter,node_subsets toneMint
class node_comparison,node_hashing,node_safety,node_serde toneRose
class node_consumer toneIndigo
```

## Components

### Public API

- [Crate Facade](https://github.com/papill9/mitsein/blob/master/src/lib.rs): `src/lib.rs`

### Collection Types

- [Nonempty Arrays](https://github.com/papill9/mitsein/blob/master/src/array1.rs): `src/array1.rs`
- [Nonempty Vectors](https://github.com/papill9/mitsein/blob/master/src/vec1.rs): `src/vec1.rs`
- [Nonempty Deques](https://github.com/papill9/mitsein/blob/master/src/vec_deque1.rs): `src/vec_deque1.rs`
- [BTree Maps](https://github.com/papill9/mitsein/blob/master/src/btree_map1.rs): `src/btree_map1.rs`
- [BTree Sets](https://github.com/papill9/mitsein/blob/master/src/btree_set1.rs): `src/btree_set1.rs`
- [Hash Sets](https://github.com/papill9/mitsein/blob/master/src/hash_set1.rs): `src/hash_set1.rs`
- [Index Maps](https://github.com/papill9/mitsein/blob/master/src/index_map1.rs): `src/index_map1.rs`
- [Index Sets](https://github.com/papill9/mitsein/blob/master/src/index_set1.rs): `src/index_set1.rs`
- [ArrayVec Types](https://github.com/papill9/mitsein/blob/master/src/array_vec1.rs): `src/array_vec1.rs`
- [Heapless Vectors](https://github.com/papill9/mitsein/blob/master/src/heapless/vec1.rs): `src/heapless/vec1.rs`
- [Small Vectors](https://github.com/papill9/mitsein/blob/master/src/small_vec1.rs): `src/small_vec1.rs`
- [Boxed Types](https://github.com/papill9/mitsein/blob/master/src/boxed1.rs): `src/boxed1.rs`
- [Nonempty Strings](https://github.com/papill9/mitsein/blob/master/src/string1.rs): `src/string1.rs`

### Views And Iteration

- [Nonempty Slices](https://github.com/papill9/mitsein/blob/master/src/slice1.rs): `src/slice1.rs`
- [String Views](https://github.com/papill9/mitsein/blob/master/src/str1.rs): `src/str1.rs`
- [Borrowed And Cow](https://github.com/papill9/mitsein/blob/master/src/borrow1.rs): `src/borrow1.rs`
- [Nonempty Ranges](https://github.com/papill9/mitsein/blob/master/src/range1.rs): `src/range1.rs`
- [Nonempty Iterators](https://github.com/papill9/mitsein/blob/master/src/iter1.rs): `src/iter1.rs`
- [Subset Views](https://github.com/papill9/mitsein/tree/master/src/subset): `src/subset`

### Safety And Integrations

- [Comparison Helpers](https://github.com/papill9/mitsein/blob/master/src/cmp.rs): `src/cmp.rs`
- [Hash Helpers](https://github.com/papill9/mitsein/blob/master/src/hash.rs): `src/hash.rs`
- [Invariant Checks](https://github.com/papill9/mitsein/blob/master/src/safety/mod.rs): `src/safety/mod.rs`
- [Serde Support](https://github.com/papill9/mitsein/blob/master/src/serde.rs): `src/serde.rs`

### Other components

- **Library Consumer**

## Connections

- Library Consumer → Crate Facade: uses (evidence: `README.md`)
- Crate Facade → Nonempty Arrays: exports (evidence: `src/lib.rs`)
- Crate Facade → Nonempty Vectors: exports (evidence: `src/lib.rs`)
- Crate Facade → Nonempty Deques: exports (evidence: `src/lib.rs`)
- Crate Facade → BTree Maps: exports (evidence: `src/lib.rs`)
- Crate Facade → BTree Sets: exports (evidence: `src/lib.rs`)
- Crate Facade → Hash Sets: exports (evidence: `src/lib.rs`)
- Crate Facade → Index Maps: exports (evidence: `src/lib.rs`)
- Crate Facade → Index Sets: exports (evidence: `src/lib.rs`)
- Crate Facade → ArrayVec Types: exports (evidence: `src/lib.rs`)
- Crate Facade → Heapless Vectors: exports (evidence: `src/lib.rs`)
- Crate Facade → Small Vectors: exports (evidence: `src/lib.rs`)
- Crate Facade → Boxed Types: exports (evidence: `src/lib.rs`)
- Crate Facade → Nonempty Strings: exports (evidence: `src/lib.rs`)
- Crate Facade → Nonempty Slices: exports (evidence: `src/lib.rs`)
- Crate Facade → String Views: exports (evidence: `src/lib.rs`)
- Crate Facade → Borrowed And Cow: exports (evidence: `src/lib.rs`)
- Crate Facade → Nonempty Ranges: exports (evidence: `src/lib.rs`)
- Crate Facade → Nonempty Iterators: exports (evidence: `src/lib.rs`)
- Crate Facade → Subset Views: exports (evidence: `src/lib.rs`)
- Crate Facade → Invariant Checks: exports (evidence: `src/lib.rs`)
- Crate Facade → Serde Support: exports (evidence: `src/lib.rs`)
- Nonempty Arrays → Nonempty Slices: views as (evidence: `src/array1.rs`)
- Nonempty Slices → Nonempty Iterators: provides iterators (evidence: `src/slice1.rs`)
- Nonempty Vectors → Nonempty Slices: exposes views (evidence: `src/vec1.rs`)
- Nonempty Vectors → Subset Views: supports subsets (evidence: `src/vec1.rs`)
- Nonempty Vectors → Nonempty Iterators: uses conversions (evidence: `src/vec1.rs`)
- String Views → Nonempty Iterators: provides iterators (evidence: `src/str1.rs`)
- Nonempty Strings → String Views: exposes views (evidence: `src/string1.rs`)
- Nonempty Strings → Nonempty Iterators: uses conversions (evidence: `src/string1.rs`)
- BTree Sets → Subset Views: supports subsets (evidence: `src/btree_set1.rs`)
- Hash Sets → Subset Views: supports subsets (evidence: `src/hash_set1.rs`)
- Invariant Checks → Nonempty Slices: checks invariants (evidence: `src/safety/mod.rs`)
- Serde Support → BTree Maps: implements serialization (evidence: `src/serde.rs`)