---
title: effectiveLabel
framework: distributed
role: symbol
role_heading: Instance Property
path: distributed/remotecallargument/effectivelabel
---

# effectiveLabel

The effective label of this argument. This reflects the semantics of call sites of function declarations without explicit label definitions in Swift.

## Declaration

```swift
var effectiveLabel: String { get }
```

## Discussion

Discussion For example, for a method declared like func hi(a: String) the effective label is a while for a method like func hi(a b: String) or func hi(_ b: String) the label is the explicitly declared one, so a and _ respectively.