E3039 Types Errors
Types
ensure expects a function call; for example: ensure close(file)
When this occurs
This error is triggered when: ensure expects a function call; for example: ensure close(file)
Example error message
error[E3039]:
ensure expects a function call; for example: ensure close(file)
How to fix
Review the error message and check your code at the indicated location. The message describes what went wrong — fix the underlying issue it identifies.
Related errors
No related errors.