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usize indexing only

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Valdemar Høgsvig Lorenzen
2026-08-11 20:12:12 +02:00
parent fa53ca2219
commit c2343b54bb
8 changed files with 216 additions and 53 deletions
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LANGUAGE.md
+4 -3
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@@ -63,8 +63,9 @@ nominal result type: checked integer `+`, `-`, `*`, unary `-`, bitwise operators
comparisons, and compound assignments; float arithmetic, unary `-`, comparisons, and compound
assignments; and boolean equality/inequality. Integer literals and float literals are contextual.
Typed backing values and separate distinct identities remain incompatible in ordinary operations;
an explicit constructor is required to cross that boundary. Distinct integers also work as indices and slice bounds;
`minval!` / `maxval!` return the distinct type. Runtime and comptime behavior match.
an explicit constructor is required to cross that boundary. Distinct integers require an explicit
`usize` cast for indices and slice bounds; `minval!` / `maxval!` return the distinct type.
Runtime and comptime behavior match.
`typeinfo!(Distinct).backing` reports the immediate declared backing. Standard formatting peels
distinct layers recursively, so all scalar format verbs behave like the final scalar backing.
@@ -117,7 +118,7 @@ fields. `_` is not a keyword member name.
- checked integer `+ - *`, unary `-`, float-only `/`, IEEE float arithmetic, comparisons, `!`, `and`, and `or`
- Zig-style integer bitwise complement `~`, binary `&`, `|`, `xor`, shifts `<<` / `>>`, and saturating left shift `<<|`; postfix `^` remains pointer dereference
- assignments and compound assignments `+= -= *= /= &= |= xor= <<= >>= <<|=` with single evaluation of complex lvalues; `/=` is float-only and `xor=` is contiguous
- field access through struct values and pointers, index/slice bounds contextually coerced to `usize`, and unsigned narrower index support
- field access through struct values and pointers, exact `usize` indices and slice bounds, and contextual integer constants in those positions
- boolean `if` / `else if` / `else` and `for` loops with braceless single-statement bodies when the preceding expression is parenthesized or a function call
- `while` loops with conditional unwrap captures and guards plus optional post-iteration update clauses
- `for` loops over ranges, arrays, slices, and pointers-to-arrays with copy captures, pointer captures `|@item|`, and optional `usize` index captures; `inline for` specializes a comptime aggregate into one checked body per element