Lookup table module?

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1

Lookup tables are such a common problem. Is there a module in RIOT to handle them?

2

Are you looking for static or dynamic lookup tables? Static ones I would implement using designated array initializers, provided your keys are integer values.

Like this

const char* table[] = {
    [42] = "Zweiundvierzig",
    [73] = "Dreiundsiebzig",
    // ...
};

const char* translation42 = table[42];

If you do a switch, a smart compiler (there’s a flag for clang) can turn these switches into lookup tables if the compiler decides static tables are faster.