[jira] [Comment Edited] (GROOVY-8071) 1st Class Messages

["Suminda Dharmasena (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-8071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15862186#comment-15862186 ] 

Suminda Dharmasena edited comment on GROOVY-8071 at 2/11/17 3:31 AM:
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See: https://en.wikipedia.org/wiki/First-class_message

Though the same can be done it is verbose and less flexible.


was (Author: sirinath):
See: https://en.wikipedia.org/wiki/First-class_message

> 1st Class Messages
> ------------------
>
>                 Key: GROOVY-8071
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8071
>             Project: Groovy
>          Issue Type: Improvement
>            Reporter: Suminda Dharmasena
>
> Just like the spread operator it would be good to have something similar to saving and calling function.
> E.g.
> ```
> def aCall = .equals(obj1)
> obj2.*aCall(obj1) // same as obj2.equals(obj1)
> ```
> Deciding to call and placing the call happens in 2 different instances.
> ```
> def l1 = [ .f1(a), .f2(b)]
> myObj.*l1
> // similarly
> myObj.*[ .f1(a), .f2(b)]
> myObj.*[ .f1 : a, .f2 : b]
> ```
> Calls both f1 and f2 and return the results as a list of 2 items.
> ```
> [obj1, obj2].*f1()
> ```
> Call f1 on both objects. Same as spread, but
> ```
> [obj1, obj2].*[.f1(), .f2()]
> ```
> Calls f1 and f2 on obj1 followed by obj2 returning nested list of the 2 values.
> ```
> [ Obj1.f1 : a, Obj1.f : b].*[.f3: c, .f4 : d]
> ```
> Call returning [Obj1.f1(a).f3(c), Obj1.f1(a).f4(d), Obj2.f2(b).f3(c), Obj2.f2(b).f4(d)]
> If you do not want to complete cross product you can have another operator say `.**` to mean you call on the objects on the corresponding index. Or you can have this as `.*` and `.**` for the full cross product.



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