array_walk_recursive() — internals

array_walk_recursive() — internals

Where it lives

• Signature: src/builtins/array/array_walk_recursive.rs
• Lowering: src/codegen/lower_inst/builtins/arrays.rs:1584 (lower_array_walk_recursive)
• Function symbol: lower_array_walk_recursive()

Lowering notes

• Lowers array_walk_recursive(): invokes the callback on each scalar leaf of a (possibly nested)
• array, descending into array-valued elements. Returns void; leaves are passed as 8-byte scalars.

Runtime helpers

The following runtime helpers are referenced:

• __rt_array_udiff_uintersect
• __rt_array_walk_recursive

Signature summary

function array_walk_recursive(array $array, callable $callback): void

What the type checker enforces

• Arity: takes exactly 2 arguments.
• By-reference parameters: $array.

Eval interpreter (magician)

Not callable from eval’d code — the magician interpreter has no entry for this builtin.

Cross-references

• User reference for array_walk_recursive()