Does anyone have experience with Angular 4? I was hoping I could some opinions about it.

Welcome to SoloLearn forum! how to quit the habit of using sololearn? A question about Sorting of strings. What is init??? Difference between some functions and methods. Why one change is adopted when another is not? I fail to pass sololearn tests <section> tag use only inside <article> tag if it's FALSE then When does a challenge expire if the opponent doesn't complet List sorting in ascending order.