CryptoListFragment.kt

private val cryptoListAdapter by lazy {
        CryptoListAdapter {
            showToastMessage(getString(R.string.item_clicked, it.symbol))
        }
    }

private fun initView() {
        ...

        // initial recyclerView
        binding.rcCryptoList.addItemDecoration(itemDecorator)
        binding.rcCryptoList.adapter = cryptoListAdapter
    }

    private fun initObservers() {
        viewLifecycleOwner.lifecycleScope.launch {
            viewModel.getCryptoList().observe(viewLifecycleOwner, {
                cryptoListAdapter.submitData(lifecycle, it)
            })
        }
    }