Re: Problem with templated alias as delegate parameter type

[cc via Digitalmars-d-learn]

On Tuesday, 12 January 2021 at 21:32:14 UTC, Ali Çehreli wrote:
On 1/12/21 12:58 PM, cc wrote:
>      void send(T query, void delegate(T.RESPONSE) callback) {

That wants a delegate that takes a T.RESPONSE (PingResponse in 
this case). However, the following lambda is in fact a template:

>      send(PingQuery("helo"), (resp) {

You specify the type there and it works:

    send(PingQuery("helo"), (PingResponse resp) {

Ali

That seems to work, thanks.  I ended up having to define a second 
template parameter:

template send(T,TR) if (is(TR == T.RESPONSE)) {
        void send(T query, void delegate(TR) callback) {
...