error::backtrace() raises an error

Praxis · November 10

e.backtrace() raises TypeError: Result of expression 'e.backtrace' [undefined] is not a function.

Happens in both DS v21.0.6 Beta and DS v4.24.0.3 Beta

OS: Win11 64bit

Am I doing something wrong?, or is this a bug?, or a documentation problem?

Example code:

try {
  NonExistentVar.Property = 77;
} catch(e) {
  print( e.toString() );     // ReferenceError: Can't find variable: NonExistentVar
  print( e.backtrace() )     // >>> raises TypeError: Result of expression 'e.backtrace' [undefined] is not a function.
}

Richard Haseltine · November 10

We are told this appears to be a documentation error.

Praxis · November 10

Richard Haseltine said:

We are told this appears to be a documentation error.

OK - thank you Richard (and Rob).

Richard Haseltine · November 10

A bit moe inforamtion. It was an error in the DS 4 scripting documents, which has now been corrected. It was in the DS 3 QSA Error object. I am told the report by Google AI here https://www.google.com/search?q=Qt+3+QSA+Error+object+properties+and+functions is correct

Praxis · November 11

Richard Haseltine said:

A bit moe inforamtion. It was an error in the DS 4 scripting documents, which has now been corrected. It was in the DS 3 QSA Error object. I am told the report by Google AI here https://www.google.com/search?q=Qt+3+QSA+Error+object+properties+and+functions is correct

Thanks for the link.

I suspect it was only intended to work in "debug" versions of apps.

Richard Haseltine · November 11

Praxis said:

Richard Haseltine said:

A bit moe inforamtion. It was an error in the DS 4 scripting documents, which has now been corrected. It was in the DS 3 QSA Error object. I am told the report by Google AI here https://www.google.com/search?q=Qt+3+QSA+Error+object+properties+and+functions is correct

Thanks for the link.

I suspect it was only intended to work in "debug" versions of apps.

It did wwork in DS 3, but it depended on the older QSA scripting engine that was not available for the version of Qt used for DS4 (which is why older scripts have to be converted on loading, a feature that is not available for newer Qt versions and so will not be in DS 2025+ - see https://www.daz3d.com/forums/discussion/comment/9137811/#Comment_9137811 ) QSA also had nice auto-complete features.

Praxis · November 12

Richard Haseltine said:

It did wwork in DS 3, but it depended on the older QSA scripting engine that was not available for the version of Qt used for DS4 (which is why older scripts have to be converted on loading, a feature that is not available for newer Qt versions and so will not be in DS 2025+ - see https://www.daz3d.com/forums/discussion/comment/9137811/#Comment_9137811 ) QSA also had nice auto-complete features.

Thanks for that info. Ahhh... the good old days... :)

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error::backtrace() raises an error

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