DEV Community

loading...

Discussion on: “Communicating your needs” / TypeScript’s value from a Buddhist perspective (part 1)

Collapse
cubiclebuddha profile image
Cubicle Buddha Author

Short version: just use io-ts or tsoa to help check for this at runtime.

Long version: You make a very good point however there are no programming languages that check the length or existence of a string at compile time. So in Java, modern C#, Kotlin, etc a string can still be empty. However, TypeScript and Kotlin can at least check for null and undefined unlike Java and older C#.

Think of this like an array of characters instead of a word. In fact, that’s how C++ represents strings (from what I can remember).

So since the length of an array is always a variable size the language can’t determine if the string is empty at compile time. But if you use a runtime validation library at your io layer or your API layer then you can clean the data before it gets too far into the code.

Collapse
zechdc profile image
zechdc

Thanks! That's a good point that no other language handles this case either. I'll look into io-ts and tsoa.