Problem with declaring lists by means of the syntax size: ... fill_with: ... ?

[Thomas Elskens]

Hello,

According to the manuel, it should be possible to declare lists in this fashion :

matrix<int> m size: {10,10} fill_with: 1;
list<string> l size: 20 fill_with: "";

However, when I try to imitate this syntax in my own code, as follows :

action cycle_crossover(list<retailer> parent1, list<retailer> parent2)

{

list<retailer> offspring size: length(parent1) fill_with: first(parent1) ;

...}

I get this error :

"-Unknow facet size 

-Missing facet value

-Unknow facet fill_with"

Is there a means to use this syntax nevertheless ? It's much more clear than its equivalent :

list<retailer> offspring <- nil ;

loop times: length(parent1)

{

add item: first(parent1) to: offspring ;

}

Thanks a lot,

Thomas Elskens

[Alexis Drogoul]

Hi,

I agree that this is a bit confusing — but these facets are only available when you declare attributes, not temporary variables…. Maybe you can raise an issue about this, so that we harmonize these declarations…


Alexis

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[Thomas Elskens]

I rechecked the manual and this limitation is indeed spelled out : my mistake. 

I followed your advice and filed an enhancement request (issue 849). 

Thanks for the very rapid response,

Thomas