Here are some of my initial thoughts on Go (a very popular language right now). Still need to spend some time actually developing non-trivial applications with it.

Thoughts on Go

Likes

• Simple, small, stable syntax
• Strongly typed, compiled
• Awesome, modern concurrency + parrallelism
• No classes
• Interfaces
• Exports by convention (i.e functions starting with capital letters)
• First-class functions with defer statements (i.e run stuff after function exits
• Unique approach to declaring methods on custom types
• Packages, encourages separation of concerns and thinking of application parts as "microservices"

Dislikes

• Community philosophy around packages (i.e want you to copy/paste)
• No good package manager/ecosystem (i.e just have to install from GitHub repo and hope the authors don't take it down or changes stuff)
• No pattern matching
• Documentation for 3rd-party libraries is usually ugly and bad
• Seems like style is very procedural
• Ugly string interpolation
• No immutability
• Channel creation is kinda clumsy
• "Moving from Ruby to Go sometimes feels like ignoring 20 years of progress made in language design"

Undecided

• No exceptions, forced to handle errors immediately
  • Leads to very procedural code
• No generics