OpenEuphoria

Re: type checking ?

• Posted by Matt Lewis <matthewwalkerlewis at ?mail.c?m> Nov 21, 2007
• 598 views

Bernie Ryan wrote:
> 
> Suppose you have a function/procedure and one of its
> parameters is a sequence.
> 
> How can you type check the parameter to be a CONSTANT SEQUENCE NAME.

Could you elaborate on what you mean by "CONSTANT SEQUENCE NAME?" This
sounds like you want the parameter to be a specific value.  If this is
accurate, then I can't see the utility of this, but here's an example:

with type_check
type my_constant_sequence_name( object m )
    return equal( m, "My Constant Sequence Name" )
end type

procedure foo( my_constant_sequence_name bar )
    -- ...
end procedure
foo("My Constant Sequence Name")  -- works
foo("Ha Ha!")                     -- fails

Matt