Jetpack Compose release version: 1.0.0-beta01 Android Studio Build:Android Studio Arctic Fox | 2020.3.1 Canary 8 Build #AI-203.7148.57.2031.7165533, built on February 23, 2021

Expected

I want to add vertical content padding to a LazyColumn:

LazyColumn(contentPadding = PaddingValues(vertical = 16.dp)) {}

Actual

The horizontal parameter does not have a default value and therefore the following, more verbose code needs to be written.

LazyColumn(contentPadding = PaddingValues(horizontal = 0.dp, vertical = 16.dp)) {}

The following builder functions are provided for PaddingValues:

fun PaddingValues(all: Dp): PaddingValues = PaddingValuesImpl(all, all, all, all)

fun PaddingValues(horizontal: Dp, vertical: Dp): PaddingValues =
    PaddingValuesImpl(horizontal, vertical, horizontal, vertical)

fun PaddingValues(
    start: Dp = 0.dp,
    top: Dp = 0.dp,
    end: Dp = 0.dp,
    bottom: Dp = 0.dp
): PaddingValues = PaddingValuesImpl(start, top, end, bottom)

Potential solution

Add default values to the existing builder function.

fun PaddingValues(horizontal: Dp = 0.dp, vertical: Dp = 0.dp): PaddingValues =
    PaddingValuesImpl(horizontal, vertical, horizontal, vertical)

The semantics of not passing any parameters, i.e. PaddingValues(), do not change.