Some errors are really hard to find: They appear only sometimes or only on live systems or within complex source that can't run manually using a debugger. Adding debug output might help, but might also be confusing as the DBI error code 4 "statement contains no result" does.
Suchergebnisse mit Tag „errors“
I joined a commercial project lately which has been growing for years. Adding a "use" for a module which was called in source but not loaded by "use" before suddenly led some old coding sins show up. Torben and I spent two hours on finding and fixing this bug.
