You aren’t though. In most languages that use the latter declaration you would prefix the declaration with final or const or the like to specify it won’t be updated.
But if it were rust, this meme would not make sense, since you would just type let a and type inference would do its thing. Which is much more ergonomic.
You’re encoding more information in the typescript one. You’re saying it’s a string that will get updated.
Yeah, it’s explicitly distinct from
const a: Stringwhich says it won’t change, andvar a: String, which means this is legacy code that needs fixing.If there’s only two options you only need one keyword
True, but var and let are not same in js, so there is three.
if(true) {var a = "dumdum"}console.log(a)Is valid and functioning javascript. With let it is not.
You aren’t though. In most languages that use the latter declaration you would prefix the declaration with final or const or the like to specify it won’t be updated.
deleted by creator
That looks like rust ngl
It’s also valid rust syntax.
But if it were rust, this meme would not make sense, since you would just type
let aand type inference would do its thing. Which is much more ergonomic.Type inference is a pretty big thing in TypeScript as well though. In fact it’s probably the biggest thing about it, IMO.
I don’t know typescript. But if that’s the case, this meme doesn’t make much sense.
Who writes the types of variables in a language with type inference unless forced by the compiler?
Maybe it’s a language without type interference?
Either way, it sometimes makes sense in TypeScript to help the type system out a little bit.
let array: string[] = [];In this situation, the type system can’t infer that the empty array should be a
stringarray, because there are no items to go by.let a = String::from(“Hello, world!”).into()I’ll see myself out.
I was thinking the same thing. who would write typescript if they could just do Rust?
I would because I know TypeScript and I don’t know Rust.
C# has const string a = “Hello, World”;
var in js is legacy, and default should be let, but changing that would break everything