This is misleading. It implies that stateless functions are more performant than class components. The problem is that class components support `PureRenderMixin`, i.e. these components will render only when props change. In the mean time, a stateless function will render the entire vdom a new each time it is invoked (https://github.com/facebook/react/issues/5677).

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Software architect, startup adviser. Editor of https://medium.com/applaudience. Founder of https://go2cinema.com.

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