Tuesday, May 20, 2008

surprising GAMS models

I just provided this example:

$set name "hello"
$set name "world"

display "%name%";

which may be surprising to non-expert GAMS users.
Here is one that may even stump hardcore GAMS modelers:

scalar s /NA/;
s$(s>1) = 3.14;
display s;

Question: can you predict the result of the display statement?