$\frac{?}{{?}^{****}}$

Consumes a question and a potential "answer", and returns whether or not

the "answer" is valid $($but not necessarily correct$).$ For a "short$\_$answer$\_$question",

any answer is valid. But for a 'multiple$\_$choice$\_$question', the "answer" must

be exactly one of the options.

$*/$

export function isValid$($question: Question, answer: string$)$: boolean $\{$

if$($question$.$type $===$ "short$\_$answer$\_$question"$)\{$

return true;

$\}$

else if$($question$.$type $==$ "multiple$\_$choice$\_$question" && Option$)\{$

const trimmedAnswer $=$ answer.trim$().$tolowerCase$()$;

return Option.map$($Option $=>$ Option.trim$().$toLowerCase$()).$ includes$($trimmedAnswer$)$;

$\}$

else

return false;

$\}$

$\frac{?}{?}****$

Consumes a question and produces a string representation combining the

$"$id$"$ and first $10$ characters of the "name". The two strings should be

separated by $"$: $".$ So for example, the question with id $9$ and the

name $"$My First Question" would become $"9$: My First Q$".$

$*$

export function toShortForm$($question: Question$)$: string $\{$

return $""$;

$\}$