[Quantlib-users] Relinkable function

[Victoria T. <vic...@we...>]

Hello,

I read some blog articles about the function
yts1=ql.RelinkableYieldTermStructureHandle and the method
yts1.linkTo(YieldTermStructureHandle2).

I understand that it allows the yts1 to be updated according to another
yts2 (please correct me if I'm wrong).

But I don't see the purpose of doing this: using yts1 and link it to yts2,
instead of using directly yts2?

Thanks in advance for your answer.