# ‘R’ = dna.translate("AGG") . A custom C function for R, My notebook.

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In the following post, I will show how I’ve implemented a custom C function for R. This C function will translate a DNA to a protein. I’m very new to ‘R’ so feel free to make any comment about the code.C codeThe data in ‘R’ are stored in an opaque structure named ‘SEXP’. A custom C function receives some SEXP arguments and returns another SEXP. So, the declaration of my function translate_dna is:
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