Use fmt.Println() to print "Hello, World!" to the console.
Output
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From basics to modules and async. Hands-on Python lessons with a built-in editor and instant runs. Free intro lessons; Pro unlocks the full curriculum.
Problems most attempted by other developers.
The problems interviewers actually ask. Solve Two Sum, Merge Intervals, Trapping Rain Water, and more — in any of the 6 languages, without leaving uByte.
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View certificationsArrays, hashmaps & goroutines
Clean syntax, fast prototyping
Pointers, STL & performance
Closures, callbacks & async
OOP, generics & collections
Ownership, lifetimes & safety
45 min · 70% to pass · Certificate