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//// [controlFlowInstanceOfGuardPrimitives.ts]
function distinguish(thing: string | number | Date) {
if (thing instanceof Object) {
console.log("Aha!! It's a Date in " + thing.getFullYear());
} else if (typeof thing === 'string') {
console.log("Aha!! It's a string of length " + thing.length);
} else {
console.log("Aha!! It's the number " + thing.toPrecision(3));
}
}
distinguish(new Date());
distinguish("beef");
distinguish(3.14159265);
//// [controlFlowInstanceOfGuardPrimitives.js]
function distinguish(thing) {
if (thing instanceof Object) {
console.log("Aha!! It's a Date in " + thing.getFullYear());
}
else if (typeof thing === 'string') {
console.log("Aha!! It's a string of length " + thing.length);
}
else {
console.log("Aha!! It's the number " + thing.toPrecision(3));
}
}
distinguish(new Date());
distinguish("beef");
distinguish(3.14159265);
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