I struggled to understand this for a white and just after posting I
embarrassingly notice that it's just a form of chaining and handler is
passed on. Sorry for the noise
On Tuesday, March 24, 2020 at 9:44:31 PM UTC+2, Karolis Tamutis wrote:
>
> Hi,
>
> I'm struggling to understand what's the point of doing the below
>
> ...
> handler = &logHandler{log: log, next: handler} // add logging
> handler = ensureSessionID(handler) // add session ID
> handler = &ochttp.Handler{ // add opencensus
> instrumentation
> ...
>
> Isn't the logHandler struct pointer just thrown away in the next line and
> so on? If the expressions are evaluated just for their effects and value is
> to be discarded why just not assign it in the first place?
>
>
> https://github.com/GoogleCloudPlatform/microservices-demo/blob/ccff406cdcd3e043b432fe99b4038d1b4699c702/src/frontend/main.go#L147
>
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