undefined | Better HN

0 pointstrusktr4y ago0 comments

Note that AssemblyScript rides on TypeScript language syntax. How would

``` let foo: string = "whatever" ```

be able to work in any similar sense as TS/JS if? How can that map to multiple string types? The idea is both AS and TS use the same syntax for strings, and are compatible across boundaries (TS for JS side, AS for Wasm side). Having multiple string types is possible, but this would greatly reduce developer ergonomics.

0 comments

paulddraper4y ago

First you have to decide whether AssemblyScript is a language, or a compiler for an existing language.

If it's a language, then it gets to decide what ```let foo: string = "whatever"``` means.

If it's a compiler for an existing language, then semantics have already been decided, and the compiler has to implement it.

But none of the precludes abstraction to reduce data type conversions.

trusktrOP4y ago

AssemblyScript is a compiler that aims to compile TypeScript code (with slight differences to be able to make sense in Wasm, though trying to minimize those differences) into Wasm. To remain compatible with TypeScript (which is AssemblyScript's goal) and be an optimal language for Wasm that will communicate with TS/JS on the other side, the type `string` would need to be in the same format to avoid any perf hit or data loss while passing thing if that type across the Wasm-JS boundary.

I'm not sure what type of compiler to label that as, but that's the goal.

paulddraper4y ago

> I'm not sure what type of compiler to label that as, but that's the goal.

A compiler. From TypeScript to web assembly.

Certainly it has its work cut out for it to have TS semantics (that is, JS semantics) and be optimal for target web assembly.

I can't think of any scripting languages that are optimal for targeting low-level runtimes.

I wish AssemblyScript the best; seems like a hard problem.

j / k navigate · click thread line to collapse

0 pointstrusktr4y ago0 comments

Note that AssemblyScript rides on TypeScript language syntax. How would

``` let foo: string = "whatever" ```

0 comments

paulddraper4y ago

First you have to decide whether AssemblyScript is a language, or a compiler for an existing language.

If it's a language, then it gets to decide what ```let foo: string = "whatever"``` means.

If it's a compiler for an existing language, then semantics have already been decided, and the compiler has to implement it.

But none of the precludes abstraction to reduce data type conversions.

trusktrOP4y ago

I'm not sure what type of compiler to label that as, but that's the goal.

paulddraper4y ago

> I'm not sure what type of compiler to label that as, but that's the goal.

A compiler. From TypeScript to web assembly.

Certainly it has its work cut out for it to have TS semantics (that is, JS semantics) and be optimal for target web assembly.

I can't think of any scripting languages that are optimal for targeting low-level runtimes.

I wish AssemblyScript the best; seems like a hard problem.

j / k navigate · click thread line to collapse