React-Native has been around for about 2 years, and became a really interesting framework since it can be used for Android and let us build cross-platform mobile apps. A few contributors also customized the framework to build desktop apps for Mac and Windows, which is quite cool.
React-Native is very similar to ReactJS in a way, but there are differences you need to know before you start your first native app.
:indeterminate is a pseudo-class selector in CSS named for a state that is neither checked nor unchecked. It's that in-between state that we might consider the "Maybe" between "Yes" and "No" options. The state is not fully determined, hence the name: indeterminate.