Re: else ladders practice

Waldek Hebisch wrote:

Bart <bc@freeuk.com> wrote:

>
Then we disagree on what 'multi-way' select might mean. I think it means
branching, even if notionally, on one-of-N possible code paths.

>
OK.
>

The whole construct may or may not return a value. If it does, then one
of the N paths must be a default path.

>
>
You need to cover all input values.  This is possible when there
is reasonably small number of possibilities.  For example, switch on
char variable which covers all possible values does not need default
path.  Default is needed only when number of possibilities is too
large to explicitely give all of them.  And some languages allow
ranges, so that you may be able to cover all values with small
number of ranges.
>

in fact when consider in mind or see on assembly level the
implementation of switch not necessary need "default"
patch (which shopuld be named "other" btw)
it has two natural ways
1) ignore them
2) signal an runtime error
(both are kinda natural)