3 ms·

What does aliasing mean in this context?

• pkolaczk 3y ago
  If you want to reuse an object to avoid allocation, you better not have a reference to that object from somewhere else. In JS AFAIK there is no way to detect such situation automatically.
  • Etheryte 3y ago
    Yes there is, it's called scope and it's super easy to keep track of? In fact, you have to go out of your way to share a reference if you scope it.
    • pkolaczk 3y ago
      In languages like JS, Java, Python is trivial to accidentally make an object escape the scope by storing a reference in a field of another object that outlives the scope. And it can be another developer 3 months later that can introduce a bug, not knowing about your clever object reuse.