rethrow

rethrow([e])

Throw an object without changing the current exception backtrace. The default argument is the current exception (if called within a catch block).

Examples

Rethrow the current exception:
```
try
# Some code that might throw an exception
catch ex
# Handle the exception
rethrow()
end
```
This example demonstrates the use of rethrow() within a catch block to rethrow the current exception without modifying the backtrace.

Rethrow a specific exception:

try
# Some code that might throw an exception
catch ex
if isa(ex, MyCustomException)
    # Handle specific exception
else
    # Rethrow the exception
    rethrow(ex)
end
end

In this example, rethrow(ex) is used to rethrow a specific exception that meets certain conditions, while handling other exceptions differently.

Rethrow with a modified backtrace:

try
# Some code that might throw an exception
catch ex
# Modify the exception or backtrace
modified_ex = modify_exception(ex)
modified_ex.backtrace = ...
rethrow(modified_ex)
end

This example demonstrates how rethrow() can be used to rethrow an exception with a modified backtrace or other modified attributes.

Common mistake example:

try
    # Some code that might throw an exception
catch ex
    # Rethrow the exception with a new message
    rethrow("Custom message")
end

In this example, rethrow() is mistakenly used to rethrow an exception with a new message. However, rethrow() does not accept a new message as an argument. To modify the exception message, it is better to create a new exception and throw it using throw().

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rethrow

Examples

See Also

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