Hacker News Reader

Comment by stephengillie | Hacker News Reader

I really like the type system in Powershell and wish JavaScript had something similar. Typescript is a mess by comparison.

  [string]$String = "Dog"; 

  $String = 5;
  Cannot convert value 5 to type "System.Objects.String"

View on HN

This produces a similar error ("Type 5 is not assignable to type 'string'") when compiled with TS:

   var s: string = "Dog";
   s = 5;

The difference is that it's a compile-time error, while in PowerShell it's a run-time check. But what's the difference in this case? Either way, it tells you.

The biggest difference - not needing to compile - is offset by the slowness of Powershell. If only one language was best across all metrics.

Reply on news.ycombinator.com