[Symphony] Updating constraints in Symphony: a newbie question [C1]

[Bernard KAPLAN]

Hello,

I'm new to Symphony and want to test whether it can be a good alternative 
to either lpsolve or glpk to my (small) problem in terms of performance.

I'd like to know how to update elements in the constraint matrix once the 
problem has be constructed.
So far I've been looking in the documentation but couldn't find the 
answer. I've only found methods to add or remove rows and columns, method 
to access the data but none to modify them.

Thanks,

B
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