23 lines
687 B
Markdown
23 lines
687 B
Markdown
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# Hints
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## General
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- Read about [errors][errors] in the Getting Started guide.
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- Read about [`try`][docs-try] in the documentation.
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## 1. Warn the team
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- Allow the operation function to raise its error.
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- To invoke a function in a variable, use the `.` operator.
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## 2. Wrap the error
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- Make use of try .. rescue to return the intended result.
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## 3. Pass on the message
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- Make use of try .. rescue to return the intended result.
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- The rescue block allows you to pattern match on the error's Module name and also bind the error to a variable.
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[errors]: https://hexdocs.pm/elixir/try-catch-and-rescue.html#errors
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[docs-try]: https://hexdocs.pm/elixir/Kernel.SpecialForms.html#try/1
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