groovy-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jeff Lowery <jef...@mavericklabel.com>
Subject Re: [VOTE] new operator ?=
Date Tue, 29 Nov 2016 00:30:04 GMT
Elsignment?

— Jeff



> On Nov 23, 2016, at 4:30 PM, Daniel Sun <realbluesun@hotmail.com> wrote:
> 
> I like the nickname "Elvis assignment" for ?=
> 
> Cheers,
> Daniel.Sun
> 
> 
> 
> 在 2016年11月24日 04:18,"Guillaume Laforge [via Groovy]" <ml-node+[hidden email]
<x-msg://14/user/SendEmail.jtp?type=node&node=5736970&i=0>>写道:<br
type="att
> Sounds about right.
> 
> On Wed, Nov 23, 2016 at 9:07 PM, Shil Sinha <[hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=0>>
wrote:
> Elvis assignment?
> 
> On Wed, Nov 23, 2016 at 1:47 PM Andres Almiray <[hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=1>>
wrote:
> Long live pompaduor walrus ...
> 
> What would be an appropriate nickname for ?=, I wonder.
> 
> -------------------------------------------
> Java Champion; Groovy Enthusiast
> http://jroller.com/aalmiray <http://jroller.com/aalmiray>
> http://www.linkedin.com/in/aalmiray <http://www.linkedin.com/in/aalmiray>
> --
> What goes up, must come down. Ask any system administrator.
> There are 10 types of people in the world: Those who understand binary, and those who
don't.
> To understand recursion, we must first understand recursion.
> 
> On Wed, Nov 23, 2016 at 7:35 PM, Paul King <[hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=2>>
wrote:
> For all our other operators of the form:
> 
> a X= b
> 
> it is shorthand for:
> 
> a = a X b
> 
> So, to follow that convention the operator is:
> 
> a ?:= b
> 
> which as per previous discussions is a bit cumbersome, so I am +1 for
> the shortened form so long as we document appropriately.
> 
> Paul.
> 
> 
> On Thu, Nov 24, 2016 at 3:54 AM, Gerald Wiltse <[hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=3>>
wrote:
> > +1
> >
> > Gerald R. Wiltse
> > [hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=4>
> >
> >
> > On Wed, Nov 23, 2016 at 12:28 PM, Winnebeck, Jason
> > <[hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=5>>
wrote:
> >>
> >> At first I was going to vote 0, because I feel like a = a ?: b is clear
> >> (and I compare it to a = a || b from JS). However, looking at the dev list,
> >> I definitely see a nice case for it:
> >>
> >> person.name.last = person.name.last ?: "unknown"
> >>
> >> When you have a non-trivial assignment expression, I see the benefit:
> >>
> >> person.name.last ?= "unknown"
> >>
> >> However, I feel like it is not intuitive or clear. But, I don't think the
> >> operator hurts, and it's certainly not any less intuitive than <=> for
> >> example or even ?: when seen for the very first time. It's an easy look up
> >> in Groovy docs, and if you don't know it and don't use it, it's not a huge
> >> loss. So it doesn't hurt to add it, and while not instantly readable, it's a
> >> trivial docs lookup when someone is reading the code.
> >>
> >> So, I vote +1. But, honestly, I don't see myself using it very often as
> >> I'd normally use Elvis at time of initial assignment. I wouldn't put it very
> >> high on a prioritized backlog of things to improve for Groovy.
> >>
> >> Jason
> >>
> >> -----Original Message-----
> >> From: Daniel Sun [mailto:[hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=6>]
> >> Sent: Wednesday, November 23, 2016 10:59 AM
> >> To: [hidden email] <x-msg://14/user/SendEmail.jtp?type=node&node=5736959&i=7>
> >> Subject: [VOTE] new operator ?=
> >>
> >> Hi all,
> >>
> >>      If the new operator ?=  (e.g. a ?= 'foo'  is equivalent of  a = a ?:
> >> 'foo') were to be added to Groovy programming language, do you like it?
> >> (Yes: +1; No: -1; Not bad: 0)
> >>
> >> Cheers,
> >> Daniel.Sun
> >>
> >>
> >>
> >> --
> >> View this message in context:
> >> http://groovy.329449.n5.nabble.com/VOTE-new-operator-tp5736931.html <http://groovy.329449.n5.nabble.com/VOTE-new-operator-tp5736931.html>
> >> Sent from the Groovy Users mailing list archive at Nabble.com.
> >>
> >> This email message and any attachments are for the sole use of the
> >> intended recipient(s). Any unauthorized review, use, disclosure or
> >> distribution is prohibited. If you are not the intended recipient, please
> >> contact the sender by reply email and destroy all copies of the original
> >> message and any attachments.
> >
> >
> 
> 
> 
> 
> -- 
> Guillaume Laforge
> Apache Groovy committer & PMC Vice-President
> Developer Advocate @ Google Cloud Platform
> 
> Blog: http://glaforge.appspot.com/ <http://glaforge.appspot.com/>
> Social: @glaforge <http://twitter.com/glaforge> / Google+ <https://plus.google.com/u/0/114130972232398734985/posts>
> 
> If you reply to this email, your message will be added to the discussion below:
> http://groovy.329449.n5.nabble.com/VOTE-new-operator-tp5736931p5736959.html <http://groovy.329449.n5.nabble.com/VOTE-new-operator-tp5736931p5736959.html>
> To unsubscribe from [VOTE] new operator ?=, click here <applewebdata://74EE9B77-5B71-459C-9927-CCBCA5601822>.
> NAML <http://groovy.329449.n5.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
> View this message in context: Re: [VOTE] new operator ?= <http://groovy.329449.n5.nabble.com/VOTE-new-operator-tp5736931p5736970.html>
> Sent from the Groovy Users mailing list archive <http://groovy.329449.n5.nabble.com/Groovy-Users-f329450.html>
at Nabble.com.


Mime
View raw message