[nem-bug] [Nemerle 0000642]: Error if list declared without initialisation

[feedback at nemerle.org]

A NOTE has been added to this issue.
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<http://nemerle.org/bugs/view.php?id=642> 
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Reported By:                VladD2
Assigned To:                
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Project:                    Nemerle
Issue ID:                   642
Category:                   Compiler
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             04-01-2006 19:09 CEST
Last Modified:              04-05-2006 21:12 CEST
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Summary:                    Error if list declared without initialisation
Description: 
Error reported for this code:
mutable seq : list[int];
seq = [3];
WriteLine(seq.Head);

Error message:
test-016.n:8:20:8:23: error: parse error near identifier `int': unexpected
end of token sequence
test-016.n:8:20:8:23: error: expected assignment operator =

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----------------------------------------------------------------------
 nazgul - 04-05-06 21:12 
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BTW, this is our design from the beginning. We do not want any
uninitialized local variable flying around. Usually you can just do 

mutable seq = null;
seq = [3];

it will work fine. And as for value types, you can always use their
parameterless constructor:

mutable x = int();
x = 4;

I'm against, but maybe we should change this design - it creates
additional problems, because we must then perform complex flow control to
prevent usage of uninitialized variables.

Issue History
Date Modified  Username       Field                    Change              
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04-01-06 19:09 VladD2         New Issue                                    
04-05-06 21:12 nazgul         Note Added: 0001163                          
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