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deprecated string case statements without 'else'

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Araq 2014-10-02 10:08:41 +02:00
commit c99ec16544
4 changed files with 15 additions and 8 deletions
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@ -312,7 +312,7 @@ the compiler that for every other value nothing should be done:
The empty `discard statement`_ is a *do nothing* statement. The compiler knows
that a case statement with an else part cannot fail and thus the error
disappears. Note that it is impossible to cover all possible string values:
that is why there is no such check for string cases.
that is why string cases always need an ``else`` branch.
In general the case statement is used for subrange types or enumerations where
it is of great help that the compiler checks that you covered any possible