array_map() — internals

array_map() — internals

Where it lives

• Signature: src/builtins/array/array_map.rs
• Lowering: src/codegen/lower_inst/builtins/arrays.rs:326 (lower_array_map)
• Function symbol: lower_array_map()

Lowering notes

• Lowers array_map() through the callback runtime helper matching the callback result type.

Runtime helpers

No direct __rt_* helpers captured — the lowering is inlined or routes through another builtin.

Signature summary

function array_map(callable $callback, array $array, ...$arrays): array

What the type checker enforces

• Arity: takes exactly 2 arguments.
• Variadic: collects excess arguments into $arrays.

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/array/array_map.rs (eval_builtin!)
• Dispatch hooks: direct, values
• Variadic: collects excess arguments into $arrays.

Cross-references

• User reference for array_map()