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documented else / finally syntax for try / catch

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This commit is contained in:
Tuukka Turto 2013-06-30 08:27:15 +03:00
parent ceea41ac93
commit cabf40bd2a
1 changed files with 7 additions and 5 deletions
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docs/language/api.rst
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@ -116,9 +116,6 @@ no arguments to re-raise the last Exception.
try
---
.. TODO::
Document the else / finally syntax.
the `try` form is used to start a `try` / `catch` block. The form is used
as follows
@ -126,7 +123,12 @@ as follows
(try
(error-prone-function)
(catch [e SomeException] (err "It sucks!")))
(catch [e ZeroDivisionError] (print "Division by zero"))
(else (print "no errors"))
(finally (print "all done")))
`try` must contain at least one `catch` block, and may optionally have an
`else` or `finally` block.
`else` or `finally` block. If an error is raised with a matching catch
block during execution of `error-prone-function` then that catch block will
be executed. If no errors are raised the `else` block is executed. Regardless
if an error was raised or not, the `finally` block is executed as last.