MainActivity.kt

private suspend fun loadPosts() {
    viewModel.getAllPosts().collect { state ->
        when (state) {
            is State.Loading -> {
                showToast("Loading")
            }

            is State.Success -> {
                val postText = state.data.joinToString("\n") {
                    "${it.postContent} ~ ${it.postAuthor}"
                }

                binding.textPostContent.text = postText
            }

            is State.Failed -> showToast("Failed! ${state.message}")
        } // END when
    } // END collect
}