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From daniel_sun <realblue...@hotmail.com>
Subject 答复: Lambda expression for Groovy 3
Date Wed, 19 Oct 2016 12:12:14 GMT
Hi Rémi,

     Groovy can choose the right method to call :)

assert ['1', '2', '3'] == [1, 2, 3].collect(Integer.&toString)


Cheers,
Daniel.Sun



________________________________
发件人: Remi Forax [via Groovy] <ml-node+s329449n5736203h51@n5.nabble.com>
发送时间: 2016年10月19日 19:29
收件人: daniel_sun
主题: Re: Lambda expression for Groovy 3

Daniel,
you have also to test that Type::method work not only with static methods but also with instance
method.

The awful case being when you have a static method that takes an instance in parameter that
'overload' an instance method, like Integer.toString() and Integer.toString(int).

Rémi

----- Mail original -----
> De: "daniel_sun" <[hidden email]</user/SendEmail.jtp?type=node&node=5736203&i=0>>
> à: [hidden email]</user/SendEmail.jtp?type=node&node=5736203&i=1>
> Envoyé: Mercredi 19 Octobre 2016 12:23:09
> Objet: Re: Lambda expression for Groovy 3

> Hi Jochen,
>
>      I plan to map Java's *::* to Groovy's *.&*, the following code is ok
> now. What do you think about it?
>
> [1, 2, 3].stream().forEach(System.out.&println)          // object method,
> [1, 2, 3].stream().forEach(System.out::println)
> [1, 2, 3].stream().forEach(Objects.&requireNonNull) // class method,  [1, 2,
> 3].stream().forEach(Objects::requireNonNull)
>
> Cheers,
> Daniel.Sun
>
>
>
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