Currently under development!
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22 April 2024
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1 min
Have you ever handled exceptions in your ruby code? If so, then you would have come across rescue
. Let’s see an example for a refresher.
If we run the following code, we get Exception Rescued
on our terminal. That’s self-explanatory.
But what if we want to use some properties of the exception inside the rescue block? Let’s say we want to print out the exception message rather than Exception Rescued
. One way to do that would be as follows:
This way, we are assigning the exception into the variable e
and printing out the message to the console.
As a note, it is advised to specify the exact exception you are catching for better code.
In this case:
RuntimeError
Another way of achieving this is to use the ruby $!
constant as follows:
You will notice that the e
variable is no longer there. we can access the exception from the $!
constant. This constant is always nil when used anywhere else in your ruby code. It only always has a value within the rescue block.
This is a nice tip to have while writing or reading code. Thanks for your time and happy coding.