Entry Points

Your program must start somewhere. That somewhere is the 'entry point', a global function which is called by the start-up routines and offers you the command line arguments to the program. VSL has a few ways to specify the entry point:

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•  func main() { ... } 

Takes no arguments.

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•  func main(args: String[]) { ... } 

With this entry point. VSL will wrap the input arguments into a string array which you can then access or modify using VSL.

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• func main(argc: Int, argv: Pointer<ByteSequence>) { ... }

This is a C-style entry point which takes the amount of args argc and a pointer to a list of byte sequence pointers (analogous to char**)