We are already familiar with the concepts of inputs, content children, and view children, and we also know when we can get a reference to them in the component's life cycle. Now, we will combine them and introduce a new concept-TemplateRef.

Let's take a step back and take a look at the last to-do application we developed earlier in this chapter. In the following screenshot, you can see what its UI looks like:

Figure 11

If we take a look at its implementation in ch4/ts/inputs-outputs/app.ts, we'll see that the template used to render the individual to-do items is defined inside the template of the entire to-do application.

What if we want to use a different layout to render the to-do items? We can do this by creating another component called Todo, which encapsulates the responsibility of rendering them. Then, we can define separate Todo components for the different layouts we want to support. This way, we need to have n different components for n different...