Julia: Define Generic error messages

By using error() function, you can define generic error with a message.

julia> function process_info(a)
           if(a<0)
               error("Invalid Domain")
           elseif(a>100)
               error("Index out of bounds")
           else
               println("Processing data")
           end
       end

process_info (generic function with 2 methods)

julia> process_info(-1)
ERROR: Invalid Domain
 in process_info at none:3

julia> process_info(1)
Processing data

julia> process_info(101)
ERROR: Index out of bounds
 in process_info at none:5

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