[Tcl-bugs] [ tcl-Feature Requests-1771726 ] Forced Variable Types

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Feature Requests item #1771726, was opened at 2007-08-10 10:58
Message generated for change (Comment added) made by dgp
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Category: 07. Variables
Group: None
>Status: Closed
>Resolution: Invalid
Priority: 5
Private: No
Submitted By: William Webb (deusued)
>Assigned to: Don Porter (dgp)
Summary: Forced Variable Types

Initial Comment:
As a loyal and devout Tcl professional (7+ years), I have come across a situation where I would really -love- to be able to force a variable type, or cast it, as a single type.

While this may incur overhead, I would like to believe that it could be implemented in such a manner that both execution speed would be significantly faster (no casting required if a specific bit is set on the variable) and potentially reducing the memory overhead necessary to cast (I'm out of water here, though).

ex:
%set -double myDouble 1.002
%lappend myDouble 2
 /error thrown, much like passing an array in as the first arg/
%set -string myString "1.01"
%expr $myString + 2.01
 /error thrown, much like passing {} in/

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>Comment By: Don Porter (dgp)
Date: 2007-08-10 15:22

Message:
Logged In: YES 
user_id=80530
Originator: NO


To restrict the set of values
a variable may hold, use variable
write traces.

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