WARNING: jsvGetString Overflowed

Hi All,

My code is using and unique ID for messages that is randomly generated (say: acbdefghijklmnopqrstuvwxyz1234567890). If I put those IDs in an object and run hasOwnProperty on the object to look for the ID, it returns a WARNING: jsvGetString Overflowed.

this example shows the bug:

function foo() {
  var bar= {"acbdefghijklmnopqrstuvwxyz1234567890":2};
  console.log(bar, bar.hasOwnProperty("acbdefghijklmnopqrstuvwxyz1234567890"));
}

function onInit() {
  foo();
}

Is this a bug or a limitation of the hardware?

Regards,

Alex

It's a bug - I'll file an issue for it. The length of IDs in Espruino is limited - but that should only be for things like function names.

The problem is when Espruino tries to check all of the built-in methods as well.

For now, I'd recommend that you just use in:

function foo() {
  var bar= {"acbdefghijklmnopqrstuvwxyz1234567890":2};
  console.log(bar, "acbdefghijklmnopqrstuvwxyz1234567890" in bar);             
}

Hi Gordon,

thank you for the reply :). I've sidestepped the issue for now by using a large random number and toString(36) with it. Is it a better practice in general to check if a key exists with "in" instead of "hasOwnProperty"? Is this both the case for normal javascript as well as espruino?

Regards,

Alex

I can't really comment on normal JS I'm afraid. In Espruino, using in is probably marginally faster though, and you could argue it's more readable...