And then after 3 more years you will be a good Full-Stack dev... I see it possible if you don't have responsibilites in life. You finished college, have plenty of a full time, you don't need to sleep 8h - no problem, You will learn basics of full-stack in 3 months, but this will be basics - look at all that stuff in css, modern js, configs and on the backend security issues... first more comlpex app and you will need config webpack alone or use default mongo driver instead of a mongoose, and i don't see it after 3 months learning.
BUT! If you have the opportunity of full time learning - do it - after that time, learning will be a real pain in the ass (IMHO)
Also - as a dev, you learn all the time.
Yes, I agree but during this lockdown i am a practical example of this post who is still learning ReactJS and working on projects which i feel the super fast method to learn and grow.
Do check my portfolio website which is under construction..
But i sleep about 10-12 Hrs
Yeah - I agree, that it's possible to learn all that in 3 months, if you don't work full time, but it will be far from being professional full-stack dev who need enormous amount of knowledge not only about chosen stack but also about security, optimization, architecture, good practices, etc.
I work with front-end about 10 years, and i can write rest api + mongodb, but it doesn't make me a full-stack - I'm far from that :)
So. Can one learn full-stack basics (or even more than that) in 3 months? Sure, under some circumstances. Can one be a professional/good full-stack developer in 3 months? IMHO only if one is a genius :)
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