IDL Problem Code `20` with alias `return-vals-pro`

Want to disable me? Check out the configuration guide to learn more.

Execution Error

This is a fatal error that prevents IDL from compiling or running code

This identifies return statements in procedures that have arguments (i.e. things they return) when that is not allowed.

idl

pro myAwesomePro
  compile_opt idl2
  return, 21
  ;     ^^^^ problem here
end

The correct way to use return within procedures or procedure methods is:

idl

pro myAwesomePro
  compile_opt idl2
  return
  ;     ^^^^ correct syntax is to not return anything
end

IDL Problem Code 20 with alias return-vals-pro ​