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+s329449n5736959...@n5.nabble.com>写道：<br type="att Sounds about right. On Wed, Nov 23, 2016 at 9:07 PM, Shil Sinha <[hidden email]</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]</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://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]</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]</user/SendEmail.jtp?type=node&node=5736959&i=3>> wrote: > +1 > > Gerald R. Wiltse > [hidden email]</user/SendEmail.jtp?type=node&node=5736959&i=4> > > > On Wed, Nov 23, 2016 at 12:28 PM, Winnebeck, Jason > <[hidden email]</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]</user/SendEmail.jtp?type=node&node=5736959&i=6>] >> Sent: Wednesday, November 23, 2016 10:59 AM >> To: [hidden email]</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 >> 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/ 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 To unsubscribe from [VOTE] new operator ?=, click here<http://groovy.329449.n5.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=5736931&code=cmVhbGJsdWVzdW5AaG90bWFpbC5jb218NTczNjkzMXwxMTQ2MjE4MjI1>. 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: http://groovy.329449.n5.nabble.com/VOTE-new-operator-tp5736931p5736970.html Sent from the Groovy Users mailing list archive at Nabble.com.
