HackerRank's 2018 Developer Skill Report
is a major study of the developer community to identify trends in the education, skills, and hiring practices. Nearly 40,000 professionals and students have completed this in–depth survey.
It is done by developers for developers, and that's why we used a code generated art to illustrate the report.
More about that on Bēhance.
If you have any developer friends, feel free to exchange the link to survey results for a beer!