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//: Recipe to compute the length of an array.
:(scenario array_length)
recipe main [
1:number <- copy 3:literal # length
2:number <- copy 14:literal
3:number <- copy 15:literal
4:number <- copy 16:literal
5:number <- length 1:array:number
]
+mem: storing 3 in location 5
:(before "End Primitive Recipe Declarations")
LENGTH,
:(before "End Primitive Recipe Numbers")
Recipe_number["length"] = LENGTH;
:(before "End Primitive Recipe Implementations")
case LENGTH: {
reagent x = canonize(current_instruction().ingredients.at(0));
if (x.types.at(0) != Type_number["array"]) {
raise << "tried to calculate length of non-array " << x.to_string() << '\n';
break;
}
products.resize(1);
products.at(0).push_back(Memory[x.value]);
break;
}
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