Other syntax for anonymous function definition

[muriloadriano]

For simplicity one might want to have a simplified way to write its anonymous functions. Consider the each method. Currently we would have to write something like:

arr.each(function(x) { println(x * x); });

It would be nice if we were able to write less. My proposal is something like:

arr.each(|x| { println(x * x) });

Notice that the missing ; is intentional. The ; for the last sentence should be optional.

[felipensp]

Well, I do prefer the current syntax. What do you guys think about? @heuripedes @gogo40

[gogo40]

Yeah, I like |x| !

2013/1/12 Felipe Pena notifications@github.com

Well, I do prefer the current syntax. What do you guys think about? @heuripedes https://github.com/heuripedes @gogo40https://github.com/gogo40

— Reply to this email directly or view it on GitHubhttps://github.com/clever-lang/clever/issues/230#issuecomment-12185947.

Atenciosamente, Péricles Lopes Machado

"Uma verdade claramente compreendida não pode ser escrita com sinceridade."

Marcel Proust

[muriloadriano]

The idea isn't replace the current syntax, but have an alternate syntax.

[felipensp]

Ah, got it. I'm not against alternative syntax at all. :)

[heuripedes]

As convenient as it may look, I do not like the |x| {} syntax for the following reasons:

• Clever syntax requires the use of parenthesis, and that makes the proposed syntax kind of hard to read sometimes.
• I believe it would introduce inconsistency because of the new semi-colon exception. IMO this is another annoying inconsistency on the language (worry not, this is an issue on all c++/c-like languages), but I might just be biased in this case.
• It would be more interesting if we could simplify/shorten the current syntax for both "fdecl-as-statement" and "fdecl-as-expression".

[felipensp]

It makes sense, Higor. But what do you mean by simplify/shorten the current syntax? What do you suggest?

[muriloadriano]

What if we introduce a new symbol?

var func = $(x, y) { 
    return 'foo' + x + y;
}

arr.each($(x) { println(x * x); });