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};
};
};
};
function indexinterpolate(obj,i) { return (obj[i] != undefined) ? obj[i] : obj};
// helper function for checking a part of an array exists
function indexcheck(obj,i) { return (obj[i] != undefined) ? obj[i] : undefined };
// dive selects matrix.a.b.c.d from the array called matrix and 'a.b.c.d' as string
// if a.b.c.d does not exists, it returns the substructure until the substructure exists, if d does not exist, it returns matrix.a.b.c e.g.
function dive(array, read){
return read.split('.').reduce(indexinterpolate, array);
}
function check(array, read){
return read.split('.').reduce(indexcheck, array);
}