Raising an Exception
You can raise an exception using the raise function. At its simplest, you pass it a string and it generates an exception of type RuntimeError.
| iex> raise "Giving up" |
| ** (RuntimeError) Giving up |
| erl_eval.erl:572: :erl_eval.do_apply/6 |
You can also pass the type of the exception, along with other optional fields. All exceptions implement at least the message field.
| iex> raise RuntimeError |
| ** (RuntimeError) runtime error |
| erl_eval.erl:572: :erl_eval.do_apply/6 |
| iex> raise RuntimeError, message: "override message" |
| ** (RuntimeError) override message |
| erl_eval.erl:572: :erl_eval.do_apply/6 |
You can intercept exceptions using the try function. It takes a block of code to execute, and optional ...
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