elixir try rescue
Elixir Try Rescue
In Elixir, the try
and rescue
keywords are used to handle exceptions and errors in a controlled manner. The try
block is used to enclose the code that might raise an exception, while the rescue
block is used to handle the exception and provide an alternative flow of execution.
Here's an example of how to use try
and rescue
in Elixir:
try do
# Code that might raise an exception
raise "Oops, something went wrong!"
rescue
exception ->
# Handle the exception here
IO.puts "An exception occurred: #{exception.message}"
end
In the example above, the raise
function is used to intentionally raise an exception. The rescue
block catches the exception and executes the code inside it. In this case, it simply prints a message indicating that an exception occurred.
You can also specify the type of exception to rescue by using the rescue
clause followed by the exception type. For example:
try do
# Code that might raise an exception
raise ArgumentError, "Invalid argument"
rescue
ArgumentError ->
# Handle ArgumentError here
IO.puts "Invalid argument error occurred"
exception ->
# Handle other exceptions here
IO.puts "An exception occurred: #{exception.message}"
end
In the example above, the rescue
block is divided into two parts. The first part handles ArgumentError
specifically, while the second part handles any other type of exception.
Please note that the examples provided are for illustrative purposes and may not cover all possible use cases. It's important to consider the specific requirements of your code when using try
and rescue
in Elixir.