//META: generated=true
//META: model=claude-opus-4-8
//META: generated_at=2026-07-02T00:00:00+00:00
//META: source_commit=8e2a63cbf22c85332796702fd02a875466486a23
//META: doc_ref=docs/generated/design/ast-reference/declarations.md#nodes
//META: doc_section_digest=1e2fffffe548d3dd55e164e2d482dadafc2362dd7c8b9d5b1675743c8d5fa05c
//META: purpose=A LambdaDecl is the closure-struct produced by a lambda expression; the closure is callable through the IFunc-constrained generic helper.
//META: intent=functional
//META: pipeline_stage=check
//META: warning=Auto-generated. May drift from source. Do not edit by hand.

// Verifies the documented role of LambdaDecl. The `=>` expression
// produces a closure value; an IFunc-constrained helper invokes the
// closure and returns its result.

//TEST:INTERPRET(filecheck=CHECK):

TResult apply<TResult, TFunc:IFunc<TResult, int>>(TFunc f)
{
    return f(7);
}

void main()
{
    let r = apply( (int x) => x * 3 );
    //CHECK: 21
    printf("%d\n", r);
}
