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# Hexadecimal Convert a hexadecimal number, represented as a string (e.g. "10af8c"), to its decimal equivalent using first principles (i.e. no, you may not use built-in or external libraries to accomplish the conversion). On the web we use hexadecimal to represent colors, e.g. green: 008000, teal: 008080, navy: 000080). The program should handle invalid hexadecimal strings. ## Getting Started For installation and learning resources, refer to the [exercism help page](http://exercism.io/languages/ocaml). ## Installation To work on the exercises, you will need `Opam` and `Core`. Consult [opam](https://opam.ocaml.org) website for instructions on how to install `opam` for your OS. Once `opam` is installed open a terminal window and run the following command to install core: ```bash opam install core ``` To run the tests you will need `OUnit`. Install it using `opam`: ```bash opam install ounit ``` ## Running Tests A Makefile is provided with a default target to compile your solution and run the tests. At the command line, type: ```bash make ``` ## Interactive Shell `utop` is a command line program which allows you to run Ocaml code interactively. The easiest way to install it is via opam: ```bash opam install utop ``` Consult [utop](https://github.com/diml/utop/blob/master/README.md) for more detail. ## Feedback, Issues, Pull Requests The [exercism/ocaml](https://github.com/exercism/ocaml) repository on GitHub is the home for all of the Ocaml exercises. If you have feedback about an exercise, or want to help implementing a new one, head over there and create an issue. We'll do our best to help you! ## Source All of Computer Science [http://www.wolframalpha.com/examples/NumberBases.html](http://www.wolframalpha.com/examples/NumberBases.html) ## Submitting Incomplete Solutions It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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