Record Lookup

Record types describe objects that map keys to values of the same type.

record.ts

const day: string = ;

const studyMinutes: Record<string, number> = {
    mon: 30,
    tue: 45,
    wed: 60
};

const minutes: number = studyMinutes[day];
const hours: number = minutes / 60;

console.log(`${day}: ${minutes} minutes`);
console.log(`hours=${hours}`);

const day: string = ;

const studyMinutes: Record<string, number> = {
    mon: 30,
    tue: 45,
    wed: 60
};

const minutes: number = studyMinutes[day];
const hours: number = minutes / 60;

console.log(`${day}: ${minutes} minutes`);
console.log(`hours=${hours}`);

const day: string = ;

const studyMinutes: Record<string, number> = {
    mon: 30,
    tue: 45,
    wed: 60
};

const minutes: number = studyMinutes[day];
const hours: number = minutes / 60;

console.log(`${day}: ${minutes} minutes`);
console.log(`hours=${hours}`);

record `Record<string, number>` describes an object with string keys and number values.