• rand.Intn($UpperBoundNotIncluded)


In Go, a name is exported if it begins with a capital letter. For example, Pizza is an exported name, as is Pi, which is exported from the math package.


fmt package - fmt - Go Packages


  • os.Open
    • The function os.Open returns two values.
    • The first is an open file (*os.File) that is used in subsequent reads by the Scanner.
    • The second result of os.Open is a value of the built-in error type. If err equals the special built-in value nil, the file was opened successfully. The file is read, and when the end of the input is reached, Close closes the file and releases any resources.