...alias ReturnType!func_type ret_type;
			alias ParameterTypeTuple!func_type params;
			ret_type delegate(params...

...rsp, 120
	pop	rbx
	pop	r12
	pop	r13
	pop	r14
	pop	r15
	pop	rbp
	ret

...dchar ret;
    size_t idx;
    enforce(tryDecode(str, ret, idx));
    str = str[idx .. $];
    return ret...

...decode2(S,C)(S str, out C ret, out size_t strSliceIdx)
    if(isSomeString!S...

...00000001000014fe	popq	%r14
0000000100001500	popq	%r15
0000000100001502	ret

and for:

import std.algorithm, std.stdio...

...EBP]
                call    near ptr _D3std8internal7cstring21__T11tempCStringTuTaZ11tempCStringFNbNixAaZ3Res6__dtorMFNbNiZv
                ret
L8F:            mov     dword ptr -4[EBP],0FFFFFFFFh...

...short       L18
    L13:        mov     EAX,1
    L18:        ret

and g++ generates:

                fld     tbyte ptr 8...

...if4DoItZv@PC32
		xor	EAX,EAX
		pop	RBP
		ret
		0f1f
		add	[RAX],R8B
.text._Dmain	ends...

...inout pure nothrow @property ref
@trusted).callFunction.ret inout variables can only be declared
inside...

...A a;
    alias a this;

    alias Ret = typeof(null);

    Ret visit() {
    }
}

$ dmd -c m1.d...