Re: [akka-user] WartRemover error on Akka receive methods

2015-01-16 Thread Akka Team
Hi Javier,
seems google groups was acting weird yesterday - it thought your first
email was spam (noticed it today in there),
though since this one came through I assume all's fine again (and we
*do *definitely
want your emails to reach us :-)) :-)

Sounds cool! I'm looking forward to both linting tools getting better and
better, it's something the community has voiced a need for for a while now
:-)


-- Konrad

On Thu, Jan 15, 2015 at 11:43 PM, javierg javierg1...@gmail.com wrote:

 *Not sure if double-posting (my last reply seems to have dissapeared.)
 Apologies in advance if you get this twice*

 Hi guys,
 Viktor's idea doesn't seem to have any effect either.
 Konrad, yes, that'd be ideal and I'll raise the issue with them.
 I wasn't aware of scala-abide, it seems a bit more inmature than
 WartRemove, but what you mention about Akka specific warts might make it
 worth the extra effort. I'll definitely check it out.
 Thanks for the pointer.



 On Thursday, January 15, 2015 at 5:26:22 PM UTC-5, Konrad Malawski wrote:

 Maybe wartremover should be able to be more configurable, as in “if it’s
 an Actor don’t report this - I know already”.
 Sounds like a possible cool improvement - maybe you could bring it up on
 their issue tracker?

 Related, the Scala have a tool called scala-abide which works in a
 similar way as wartremover: https://github.com/scala/scala-abide
 They also have this warning about “inferred any” I believe (core module),
 and additionally they have some typical Akka warnings (closing over
 sender() etc):
 https://github.com/scala/scala-abide/tree/master/rules
 I’m not sure if they can enable the warning we’re talking about
 contextually though hm...

 Both look like like great tools, great to see more linters coming to
 scala :-)

 --
 Konrad 'ktoso’ Malawski
 Akka http://akka.io @ Typesafe http://typesafe.com

 On 15 January 2015 at 23:18:49, Viktor Klang (viktor...@gmail.com) wrote:

 One idea:

 def receive = { case = ... } : Receive

 (On my phone so may not work)
 --
 Cheers,
 √
 On 15 Jan 2015 23:06, javierg javie...@gmail.com wrote:

 Hi Konrad,
 Adding the type signature doesn't seem to have any effect

  *Error:(31, 26) Inferred type containing Any*
 *  def receive: Receive = {*
 * ^*

 I'm aware that WartRemover can be configured.
 I could set this particular wart to be reported as a *warning* and not
 an *error* but that will also make any other (valid) instances to
 marked as such and it's my experience that warnings get, more often than
 not, swept under the rug (something I was trying to avoid.)
 Still, like you mentioned, there doesn't seem to be a solution for this
 at the moment. I just wanted to be sure I wasn't missing something obvious.
 Many thanks for the prompt reply.



 On Thursday, January 15, 2015 at 4:32:47 PM UTC-5, Konrad Malawski
 wrote:

  Hello there,
  As I understand it, wart-remover is configurable to which warts” it
 should be reporting.

  In the case of Actor.Receive it’s not happy because it is an alias to
 Any = Unit.
  Without a large philosophical dive why it is such and not a different
 signature (and btw. Roland will soon soon get a new impl ot akka.typed out
 for preview ;-)),
  let’s address your problem and question at hand.

  Two solutions come to mind:
  1) Since the wart is triggered for “inferred type contains Any”, you
 can write the type explicitly (def receive: Receive = …) instead of it
 being inferred I assume? (Did not try that though)

  2) As seen on: https://github.com/puffnfresh/wartremover these warts
 can be enabled / disabled at will.
   warts can be configured and in your case you’d like to keep all
 “except inferred type contains Any”,
  so you could use:

  wartremoverErrors := Warts.allBut(Wart.Any)

  which should make it happy on receive methods.


  Hope this helps!
  Disclaimer: I did not try this, but it seems to all logically fall
 into place :-)

  --
  Konrad 'ktoso’ Malawski
 Akka http://akka.io @ Typesafe http://typesafe.com

 On 15 January 2015 at 22:24:00, javierg (javie...@gmail.com) wrote:

  Hi all,
 Apologies for the more than slightly offtopic question.
 I recently started using WartRemover and one of the first things that I
 encountered is a barrage of error notifications like what follows (for, as
 long as I can see, every receive method in my codebase)

 *Error:(31, 7) Inferred type containing Any*
 *  def receive = {*
 *  ^*
  Before WartRemover this code used to compile (and run) without
 issues. WartRemover claims it doesn't report false positives, but I'm
 getting this error on cases as simple and trivial as the following
 (admittedly contrived) example

 *def receive = {*
 *case a:String = log.info http://log.info(a)*
 *case _ = log.info http://log.info(Unexpected input)*
 *} *

 Is there a way to solve this (other than asking WartRemover to not
 report this)?
 Thanks in advance,

 Javier


  --
  Read the docs: http://akka.io/docs/
  Check the FAQ: 

Re: [akka-user] WartRemover error on Akka receive methods

2015-01-15 Thread Konrad Malawski
Hello there,
As I understand it, wart-remover is configurable to which warts” it should be 
reporting.

In the case of Actor.Receive it’s not happy because it is an alias to Any = 
Unit. 
Without a large philosophical dive why it is such and not a different signature 
(and btw. Roland will soon soon get a new impl ot akka.typed out for preview 
;-)),
let’s address your problem and question at hand.

Two solutions come to mind:
1) Since the wart is triggered for “inferred type contains Any”, you can write 
the type explicitly (def receive: Receive = …) instead of it being inferred I 
assume? (Did not try that though)

2) As seen on: https://github.com/puffnfresh/wartremover these warts can be 
enabled / disabled at will.
warts can be configured and in your case you’d like to keep all “except 
inferred type contains Any”,
so you could use:
    
    wartremoverErrors := Warts.allBut(Wart.Any)

which should make it happy on receive methods.


Hope this helps!
Disclaimer: I did not try this, but it seems to all logically fall into place 
:-)

-- 
Konrad 'ktoso’ Malawski
Akka @ Typesafe

On 15 January 2015 at 22:24:00, javierg (javierg1...@gmail.com) wrote:

Hi all, 
Apologies for the more than slightly offtopic question.
I recently started using WartRemover and one of the first things that I 
encountered is a barrage of error notifications like what follows (for, as long 
as I can see, every receive method in my codebase)

Error:(31, 7) Inferred type containing Any
  def receive = {
      ^
Before WartRemover this code used to compile (and run) without issues. 
WartRemover claims it doesn't report false positives, but I'm getting this 
error on cases as simple and trivial as the following (admittedly contrived) 
example

def receive = {
    case a:String = log.info(a)
    case _ = log.info(Unexpected input)
} 

Is there a way to solve this (other than asking WartRemover to not report this)?
Thanks in advance,

Javier 


--
 Read the docs: http://akka.io/docs/
 Check the FAQ: 
 http://doc.akka.io/docs/akka/current/additional/faq.html
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Re: [akka-user] WartRemover error on Akka receive methods

2015-01-15 Thread Viktor Klang
One idea:

def receive = { case = ... } : Receive

(On my phone so may not work)
-- 
Cheers,
√
On 15 Jan 2015 23:06, javierg javierg1...@gmail.com wrote:

 Hi Konrad,
 Adding the type signature doesn't seem to have any effect

 *Error:(31, 26) Inferred type containing Any*
 *  def receive: Receive = {*
 * ^*

 I'm aware that WartRemover can be configured.
 I could set this particular wart to be reported as a *warning* and not an
 *error* but that will also make any other (valid) instances to marked as
 such and it's my experience that warnings get, more often than not, swept
 under the rug (something I was trying to avoid.)
 Still, like you mentioned, there doesn't seem to be a solution for this at
 the moment. I just wanted to be sure I wasn't missing something obvious.
 Many thanks for the prompt reply.



 On Thursday, January 15, 2015 at 4:32:47 PM UTC-5, Konrad Malawski wrote:

 Hello there,
 As I understand it, wart-remover is configurable to which warts” it
 should be reporting.

 In the case of Actor.Receive it’s not happy because it is an alias to Any
 = Unit.
 Without a large philosophical dive why it is such and not a different
 signature (and btw. Roland will soon soon get a new impl ot akka.typed out
 for preview ;-)),
 let’s address your problem and question at hand.

 Two solutions come to mind:
 1) Since the wart is triggered for “inferred type contains Any”, you can
 write the type explicitly (def receive: Receive = …) instead of it being
 inferred I assume? (Did not try that though)

 2) As seen on: https://github.com/puffnfresh/wartremover these warts can
 be enabled / disabled at will.
 warts can be configured and in your case you’d like to keep all “except
 inferred type contains Any”,
 so you could use:

 wartremoverErrors := Warts.allBut(Wart.Any)

 which should make it happy on receive methods.


 Hope this helps!
 Disclaimer: I did not try this, but it seems to all logically fall into
 place :-)

 --
 Konrad 'ktoso’ Malawski
 Akka http://akka.io @ Typesafe http://typesafe.com

 On 15 January 2015 at 22:24:00, javierg (javie...@gmail.com) wrote:

 Hi all,
 Apologies for the more than slightly offtopic question.
 I recently started using WartRemover and one of the first things that I
 encountered is a barrage of error notifications like what follows (for, as
 long as I can see, every receive method in my codebase)

 *Error:(31, 7) Inferred type containing Any*
 *  def receive = {*
 *  ^*
  Before WartRemover this code used to compile (and run) without issues.
 WartRemover claims it doesn't report false positives, but I'm getting this
 error on cases as simple and trivial as the following (admittedly
 contrived) example

 *def receive = {*
 *case a:String = log.info http://log.info(a)*
 *case _ = log.info http://log.info(Unexpected input)*
 *} *

 Is there a way to solve this (other than asking WartRemover to not report
 this)?
 Thanks in advance,

 Javier


  --
  Read the docs: http://akka.io/docs/
  Check the FAQ: http://doc.akka.io/docs/akka/
 current/additional/faq.html
  Search the archives: https://groups.google.com/group/akka-user
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Re: [akka-user] WartRemover error on Akka receive methods

2015-01-15 Thread javierg
Hi Konrad,
Adding the type signature doesn't seem to have any effect

*Error:(31, 26) Inferred type containing Any*
*  def receive: Receive = {*
* ^*

I'm aware that WartRemover can be configured. 
I could set this particular wart to be reported as a *warning* and not an 
*error* but that will also make any other (valid) instances to marked as 
such and it's my experience that warnings get, more often than not, swept 
under the rug (something I was trying to avoid.) 
Still, like you mentioned, there doesn't seem to be a solution for this at 
the moment. I just wanted to be sure I wasn't missing something obvious.
Many thanks for the prompt reply.



On Thursday, January 15, 2015 at 4:32:47 PM UTC-5, Konrad Malawski wrote:

 Hello there,
 As I understand it, wart-remover is configurable to which warts” it 
 should be reporting.

 In the case of Actor.Receive it’s not happy because it is an alias to Any 
 = Unit. 
 Without a large philosophical dive why it is such and not a different 
 signature (and btw. Roland will soon soon get a new impl ot akka.typed out 
 for preview ;-)),
 let’s address your problem and question at hand.

 Two solutions come to mind:
 1) Since the wart is triggered for “inferred type contains Any”, you can 
 write the type explicitly (def receive: Receive = …) instead of it being 
 inferred I assume? (Did not try that though)

 2) As seen on: https://github.com/puffnfresh/wartremover these warts can 
 be enabled / disabled at will.
 warts can be configured and in your case you’d like to keep all “except 
 inferred type contains Any”,
 so you could use:
 
 wartremoverErrors := Warts.allBut(Wart.Any)

 which should make it happy on receive methods.


 Hope this helps!
 Disclaimer: I did not try this, but it seems to all logically fall into 
 place :-)

 -- 
 Konrad 'ktoso’ Malawski
 Akka http://akka.io @ Typesafe http://typesafe.com

 On 15 January 2015 at 22:24:00, javierg (javie...@gmail.com javascript:) 
 wrote:

 Hi all,  
 Apologies for the more than slightly offtopic question.
 I recently started using WartRemover and one of the first things that I 
 encountered is a barrage of error notifications like what follows (for, as 
 long as I can see, every receive method in my codebase)
  
 *Error:(31, 7) Inferred type containing Any*
 *  def receive = {*
 *  ^*
  Before WartRemover this code used to compile (and run) without issues. 
 WartRemover claims it doesn't report false positives, but I'm getting this 
 error on cases as simple and trivial as the following (admittedly 
 contrived) example

 *def receive = {*
 *case a:String = log.info http://log.info(a)*
 *case _ = log.info http://log.info(Unexpected input)*
 *} *

 Is there a way to solve this (other than asking WartRemover to not report 
 this)?
 Thanks in advance,

 Javier 


  --
  Read the docs: http://akka.io/docs/
  Check the FAQ: 
 http://doc.akka.io/docs/akka/current/additional/faq.html
  Search the archives: https://groups.google.com/group/akka-user
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Re: [akka-user] WartRemover error on Akka receive methods

2015-01-15 Thread Konrad Malawski
Maybe wartremover should be able to be more configurable, as in “if it’s an 
Actor don’t report this - I know already”.
Sounds like a possible cool improvement - maybe you could bring it up on their 
issue tracker?

Related, the Scala have a tool called scala-abide which works in a similar way 
as wartremover: https://github.com/scala/scala-abide
They also have this warning about “inferred any” I believe (core module), and 
additionally they have some typical Akka warnings (closing over sender() etc):
https://github.com/scala/scala-abide/tree/master/rules
I’m not sure if they can enable the warning we’re talking about contextually 
though hm...

Both look like like great tools, great to see more linters coming to scala :-)

-- 
Konrad 'ktoso’ Malawski
Akka @ Typesafe

On 15 January 2015 at 23:18:49, Viktor Klang (viktor.kl...@gmail.com) wrote:

One idea:

def receive = { case = ... } : Receive

(On my phone so may not work)
--
Cheers,
√

On 15 Jan 2015 23:06, javierg javierg1...@gmail.com wrote:
Hi Konrad,
Adding the type signature doesn't seem to have any effect

Error:(31, 26) Inferred type containing Any
  def receive: Receive = {
                         ^

I'm aware that WartRemover can be configured. 
I could set this particular wart to be reported as a warning and not an error 
but that will also make any other (valid) instances to marked as such and it's 
my experience that warnings get, more often than not, swept under the rug 
(something I was trying to avoid.) 
Still, like you mentioned, there doesn't seem to be a solution for this at the 
moment. I just wanted to be sure I wasn't missing something obvious.
Many thanks for the prompt reply.



On Thursday, January 15, 2015 at 4:32:47 PM UTC-5, Konrad Malawski wrote:
Hello there,
As I understand it, wart-remover is configurable to which warts” it should be 
reporting.

In the case of Actor.Receive it’s not happy because it is an alias to Any = 
Unit. 
Without a large philosophical dive why it is such and not a different signature 
(and btw. Roland will soon soon get a new impl ot akka.typed out for preview 
;-)),
let’s address your problem and question at hand.

Two solutions come to mind:
1) Since the wart is triggered for “inferred type contains Any”, you can write 
the type explicitly (def receive: Receive = …) instead of it being inferred I 
assume? (Did not try that though)

2) As seen on: https://github.com/puffnfresh/wartremover these warts can be 
enabled / disabled at will.
warts can be configured and in your case you’d like to keep all “except 
inferred type contains Any”,
so you could use:
    
    wartremoverErrors := Warts.allBut(Wart.Any)

which should make it happy on receive methods.


Hope this helps!
Disclaimer: I did not try this, but it seems to all logically fall into place 
:-)

-- 
Konrad 'ktoso’ Malawski
Akka @ Typesafe

On 15 January 2015 at 22:24:00, javierg (javie...@gmail.com) wrote:

Hi all, 
Apologies for the more than slightly offtopic question.
I recently started using WartRemover and one of the first things that I 
encountered is a barrage of error notifications like what follows (for, as long 
as I can see, every receive method in my codebase)

Error:(31, 7) Inferred type containing Any
  def receive = {
      ^
Before WartRemover this code used to compile (and run) without issues. 
WartRemover claims it doesn't report false positives, but I'm getting this 
error on cases as simple and trivial as the following (admittedly contrived) 
example

def receive = {
    case a:String = log.info(a)
    case _ = log.info(Unexpected input)
} 

Is there a way to solve this (other than asking WartRemover to not report this)?
Thanks in advance,

Javier 


--
 Read the docs: http://akka.io/docs/
 Check the FAQ: 
 http://doc.akka.io/docs/akka/current/additional/faq.html
 Search the archives: https://groups.google.com/group/akka-user
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 Search 

Re: [akka-user] WartRemover error on Akka receive methods

2015-01-15 Thread javierg
*Not sure if double-posting (my last reply seems to have dissapeared.) 
Apologies in advance if you get this twice*

Hi guys, 
Viktor's idea doesn't seem to have any effect either.
Konrad, yes, that'd be ideal and I'll raise the issue with them. 
I wasn't aware of scala-abide, it seems a bit more inmature than 
WartRemove, but what you mention about Akka specific warts might make it 
worth the extra effort. I'll definitely check it out. 
Thanks for the pointer.  



On Thursday, January 15, 2015 at 5:26:22 PM UTC-5, Konrad Malawski wrote:

 Maybe wartremover should be able to be more configurable, as in “if it’s 
 an Actor don’t report this - I know already”.
 Sounds like a possible cool improvement - maybe you could bring it up on 
 their issue tracker?

 Related, the Scala have a tool called scala-abide which works in a similar 
 way as wartremover: https://github.com/scala/scala-abide
 They also have this warning about “inferred any” I believe (core module), 
 and additionally they have some typical Akka warnings (closing over 
 sender() etc):
 https://github.com/scala/scala-abide/tree/master/rules
 I’m not sure if they can enable the warning we’re talking about 
 contextually though hm...

 Both look like like great tools, great to see more linters coming to scala 
 :-)

 -- 
 Konrad 'ktoso’ Malawski
 Akka http://akka.io @ Typesafe http://typesafe.com

 On 15 January 2015 at 23:18:49, Viktor Klang (viktor...@gmail.com 
 javascript:) wrote:

 One idea:

 def receive = { case = ... } : Receive

 (On my phone so may not work)
 --
 Cheers,
 √
 On 15 Jan 2015 23:06, javierg javie...@gmail.com javascript: wrote:

 Hi Konrad, 
 Adding the type signature doesn't seem to have any effect

  *Error:(31, 26) Inferred type containing Any*
 *  def receive: Receive = {*
 * ^*
  
 I'm aware that WartRemover can be configured. 
 I could set this particular wart to be reported as a *warning* and not 
 an *error* but that will also make any other (valid) instances to marked 
 as such and it's my experience that warnings get, more often than not, 
 swept under the rug (something I was trying to avoid.) 
 Still, like you mentioned, there doesn't seem to be a solution for this 
 at the moment. I just wanted to be sure I wasn't missing something obvious.
 Many thanks for the prompt reply.



 On Thursday, January 15, 2015 at 4:32:47 PM UTC-5, Konrad Malawski wrote: 

  Hello there,
  As I understand it, wart-remover is configurable to which warts” it 
 should be reporting.
  
  In the case of Actor.Receive it’s not happy because it is an alias to 
 Any = Unit. 
  Without a large philosophical dive why it is such and not a different 
 signature (and btw. Roland will soon soon get a new impl ot akka.typed out 
 for preview ;-)),
  let’s address your problem and question at hand.
  
  Two solutions come to mind:
  1) Since the wart is triggered for “inferred type contains Any”, you 
 can write the type explicitly (def receive: Receive = …) instead of it 
 being inferred I assume? (Did not try that though)
  
  2) As seen on: https://github.com/puffnfresh/wartremover these warts 
 can be enabled / disabled at will.
   warts can be configured and in your case you’d like to keep all 
 “except inferred type contains Any”,
  so you could use:
  
  wartremoverErrors := Warts.allBut(Wart.Any)
  
  which should make it happy on receive methods.
  
  
  Hope this helps!
  Disclaimer: I did not try this, but it seems to all logically fall into 
 place :-)
  
  -- 
  Konrad 'ktoso’ Malawski
 Akka http://akka.io @ Typesafe http://typesafe.com
   
 On 15 January 2015 at 22:24:00, javierg (javie...@gmail.com) wrote:

  Hi all,  
 Apologies for the more than slightly offtopic question.
 I recently started using WartRemover and one of the first things that I 
 encountered is a barrage of error notifications like what follows (for, as 
 long as I can see, every receive method in my codebase)
  
 *Error:(31, 7) Inferred type containing Any*
 *  def receive = {*
 *  ^*
  Before WartRemover this code used to compile (and run) without issues. 
 WartRemover claims it doesn't report false positives, but I'm getting this 
 error on cases as simple and trivial as the following (admittedly 
 contrived) example

 *def receive = {*
 *case a:String = log.info http://log.info(a)*
 *case _ = log.info http://log.info(Unexpected input)*
 *} *

 Is there a way to solve this (other than asking WartRemover to not 
 report this)?
 Thanks in advance,

 Javier 


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[akka-user] WartRemover error on Akka receive methods

2015-01-15 Thread javierg
Hi all, 
Apologies for the more than slightly offtopic question.
I recently started using WartRemover and one of the first things that I 
encountered is a barrage of error notifications like what follows (for, as 
long as I can see, every receive method in my codebase)

*Error:(31, 7) Inferred type containing Any*
*  def receive = {*
*  ^*
Before WartRemover this code used to compile (and run) without issues. 
WartRemover claims it doesn't report false positives, but I'm getting this 
error on cases as simple and trivial as the following (admittedly 
contrived) example

*def receive = {*
*case a:String = log.info(a)*
*case _ = log.info(Unexpected input)*
*} *

Is there a way to solve this (other than asking WartRemover to not report 
this)?
Thanks in advance,

Javier 


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  Check the FAQ: 
 http://doc.akka.io/docs/akka/current/additional/faq.html
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