Avoid unnecessary usage of panic

• An error value can also result in abrupt termination via panic if used in a panic statement.

• Panicking is done via panic and checkpanic

• Panic causes the worker/program to terminate unless trapped by the caller

• It is OK for code to intentionally panic in a situation where a bug in the program's logic has been detected, which should be an extremely rare case. e.g.:

  • programming bug
  • division by zero
  • out of memory

• Business logic-related errors would usually be returned.

Usage of checkpanic

• checkpanic may be used if you want to terminate the program when a particular expression (or action) evaluates to an error.
• It should be extremely rare to use checkpanic.

See Also:

• Error handling