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Document implicit function try #5442

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Nov 14, 2016
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Document implicit function try #5442

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19 changes: 19 additions & 0 deletions lib/elixir/lib/kernel.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -3334,6 +3334,25 @@ defmodule Kernel do
end
#=> warning: the underscored variable "_bar" is used after being set

## rescue/catch/after

Function bodies support `rescue`, `catch` and `after` as `SpecialForms.try/1`
does. The following two functions are equivalent:

def format(value) do
try do
format!(value)
catch
:exit, reason -> {:error, reason}
end
end

def format(value) do
format!(value)
catch
:exit, reason -> {:error, reason}
end

"""
defmacro def(call, expr \\ nil) do
define(:def, call, expr, __CALLER__)
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