Address of function

[viktor...@gmail.com]

Hi,

What is the reason for not allowing taking the address of a function return value, ie having to assign it to a variable first?

See https://play.golang.org/p/rjLwiVmikMc

Regards

[Viktor Ogeman]

Thanks

Sent from my phone

On 14 Apr 2020, at 15:34, Michał Łowicki <mlow...@gmail.com> wrote:



Please take a look at one of old threads about it - https://groups.google.com/forum/#!topic/golang-nuts/reaIlFdibWU.

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Michał Łowicki

[Michał Łowicki]

Please take a look at one of old threads about it - https://groups.google.com/forum/#!topic/golang-nuts/reaIlFdibWU.

On Tue, Apr 14, 2020 at 12:50 PM <viktor...@gmail.com> wrote:

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Michał Łowicki

[ben....@compass.com]

I also wanted this (when I was learning Go I just assumed & would work in front of any expression, including function calls). I opened proposal https://github.com/golang/go/issues/22647 where there was some discussion, and further discussion over at https://github.com/golang/go/issues/9097, which is still open.

The TLDR is:

* Allowing taking the address of arbitrary expressions like &"foo" and &(1+2) is probably a bad idea

* Using the syntax &T(V), e.g., &int64(v), is a reasonable idea and might have a chance

* Generics would allow a generic addr.P() function to take the address of an arbitrary value, making this unnecessary

-Ben