Add `if (var x = expr)` and `map[k].field op= rhs`#19

Open

congwang-mk wants to merge 7 commits intomainfrom

iflet-and-map-field-compound

Commits on May 5, 2026

feat: add `if (var x = expr)` declaration-as-condition
congwang-mk
committed
feat: add `map[key].field op= rhs` compound assignment
congwang-mk
committed
docs(examples): adopt elegant `if (var x = m[k])` idiom in map demos
congwang-mk
committed
docs: document `if (var x = expr)` and `m[k].field op= rhs` in README and SPEC
congwang-mk
committed
test: lock in Phase 1 IfLet and Phase 2 codegen behaviour
congwang-mk
committed
feat: drop `none` literal in favour of `null`
congwang-mk
committed
docs(examples,README,SPEC): adopt `if (var x = expr)` for remaining presence checks
congwang-mk
committed