coding-guidelines

SKILL.md

| No get prefix | fn name() not fn getname() | | Iterator convention | iter() / itermut() / intoiter() | | Conversion naming | as (cheap &), to (expensive), into (ownership) | | Static var prefix | GCONFIG for static, no prefix for const |

| Use newtypes | struct Email(String) for domain semantics | | Prefer slice patterns | if let [first, .., last] = slice | | Pre-allocate | Vec::withcapacity(), String::withcapacity() | | Avoid Vec abuse | Use arrays for fixed sizes |

| Prefer bytes | s.bytes() over s.chars() when ASCII | | Use Cow | When might modify borrowed data | | Use format! | Over string concatenation with + | | Avoid nested iteration | contains() on string is O(nm) |

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